Question

5. What is the mean proportional of 4
and 25? *
1) 6
2) 8
3) 10
4) 12​

Answer 1

Let’s consider b as mean proportional between a and c ( b is the mean proportional which we have to find) we know
A=4
C=25
Let b be the mean proportional between 4 and 25
B^2=4*25
B^2=100
B=10
Hence the mean proportional of 4and 25 is 10