Question

x:64::7:8
find the value of x​

Answer 1

PRODUCT OF MEANS = PRODUCT OF EXTREMES

i.e. 64*7 = 8*x

64*7 = 448

so 8*x = 448

x = 448/8

x = 56

Answer 2

PRODUCT OF MEANS = PRODUCT OF EXTREMES

i.e. 64*7 = 8*x

64*7 = 448

so 8*x = 448

x = 448/8

x = 56