Question

find a : b : c in each case
(a) a : b = 3 : 4, b : c = 4 : 9
(b) a : b = 5 : 3, b : c = 4 : 1
(c) : b = 1/2 : 1, b : c = 1 : 1/3
(d) a : b = 3 : 7, b : c = 3 : 7

Answer 1

a) = a:b = 3:4

b) = b:c = 4:9

so the ratio a:b:c = 3:4:9

2)a:b = 5:3 *4

b: c = 4:1*3

so,

a: b = 20:12

b:C = 12:3

so,

a:b:c = 20:12:3

d) = a:b = 3:7 *3, b: C = 3:7*7

so,

a:b = 9:21

b:c= 21:49

so the ratio a:b:C = 9:21:49