Question

plz give me answer of question no.29 b part​

Answer 1

given the proportion

9:x::x:4

we know

product of means=product of extreme

x×x=9×4

x²=36

x=√36

x=6

Answer 2

Here one ratio is proportional to the other ratio... So

1st ratio = 2nd ratio

So

9/x = x/4

by cross multiplication

9*4 = x*x

36 = x

${x}^{2} \: \: = 36$

or x = 6