Question

Find the fourth proportional to 8.1,1.2,2.7

Answer 1

Let the fouth proportional be x.

So,
8.1:1.2=2.7:x
[Product of means=Product of extremes]
x=1.2×2.7/8.1
x=0.4

Answer 2

Let the fourth one be x
8.1:1.2::2.7:x
8.1/1.2=2.7/x
x=1.2*2.7/8.1
x=0.4Ans
Check dis