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Книги Книги 1 - 10 з 83 у Four quantities are said to be proportional when thejatio of the first to the second....
" Four quantities are said to be proportional when thejatio of the first to the second is the same as the ratio of the third to the fourth. "
A Dictionary of Science, Literature, & Art: Comprising the Definitions and ... - Сторінка 113
редактори - 1867
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Том 1

Samuel Webber - 1801
...geometrical proportion ; for •£-= '•£ — 2, but \- = 8. Four numbers are directly proportional, when the ratio of the first to the second is the same as that of the third to die fourth. As 2 : 4 : : 3 : 6. Four numbers are said to be recipri*ally or inversely...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - 1811
...the same ratio. 19. Four quantities are said to be Proportional, when the ratio of the first to die second, is the same as the ratio of the third to the fourth. As of the four, A (2), B (4), c (5), D (10), where f- = " = 2, both the same ratio. Nate. Note. To...
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A Course of Mathematics: For the Use of Academies as Well as Private ..., Том 1

Charles Hutton - 1812
...(4), c (8), where .J ;= | = 2, both the same ratio. 79. Four quantities are said to be Proportional, when the ratio of the first to the second, is the same as the ratio cf the third to the fourth. As of the four, A (2), B (4), c (5), D (10), where .* = '.j°— S. both...
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A System of Arithmetic

Samuel Webber - 1812 - 248 стор.
...discontinued geometrical proportion ; for £=y=2, but *^=8. Four numbers are directly proportional, when the ratio of the first to the second is the same, as that of the third to the fourth. As 2 : 4 : : 3 : 6. Four numbers are said to be reciprocally, or inversely...
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A Course of Mathematics in Two Volumes for the Use of Academies, as ..., Том 1

Charles Hutton - 1816
...(4), c (8), where £ = { = 2, both the same tatio. 79. Four quantities arc said to be Proportional, when the ratio of the first to the second, is the same as the ratio of the third to the fourth. As of the four, A (2), B (4), c (5), D < 10), where $ c= if = 3, both the same ratio. Mate. JVbte....
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822
...B (4), c (8), where f =f =5, both the same ratio. 79. Four quantities are said to be Proportional, when the ratio of the first to the second, is the same as the ratio of the third to the fourth. As of the four, A (2), B (4), c (5), p (10), where 5=»/r=i, both the same ratio. .\<>if. To denote...
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A New and Concise System of Arithmetick: Containing Vulgar, Decimal, and ...

Beriah Stevens - 1822 - 423 стор.
...division of the wntecedent 1, by the consequent 2, viz. i. Four numbers are siiid to be proportional when the ratio of the first to the second is the same as that of the tliii'd to the fourth ; and the proportional numbers are usually distinguished from one...
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Elements of Science and Art: Being a Familiar Introduction to Natural ..., Том 2

John Imison - 1822
...consequent by the antecedent. 54. Three magnitudes or quantities, A,B,C, are said to be proportional, when the ratio of the first to the second is the same as that of the second to the third. Thus, 2, 4, 8, are proportional, because 4> is contained in 8 as many...
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A treatise on mercantile and practical arithmetic

John Penrose (teacher of arithmetic.) - 1824
...of 9 to 12. Proportion consists of three terms at least. Three numbers are said to be proportional, when the ratio of the first to the second, is the same as- the ratio of the second to the fourth; as 2, 4,8, where -}=£=2, both the same ratio, for 4 is as much greater in...
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A Course of Mathematics for the Use of Academies: As Well as Private ..., Том 1

Charles Hutton - 1825
...both the same ratio. 7'j. Four quantities are said to be Proportional, when the ratio of the tirst to the second, is the same as the ratio of the third to the fourth. As of the four, A (2),u(4),c (5),D (10), where tF=-fa-—%, both the same ratio. Aofp, .Vote. To denote...
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