Question 148

What is the ratio of the mean proportional between 8.1 and 3.6 and the third proportional of 2 and 3?

Solution

Now mean proportional of two numbers means the geometric mean of the two numbers 
so mean proportional of 8.1 and 3.6 will be $$\left(8.1\times\ 3.6\right)^{\frac{1}{2}}=\ 5.4$$
Now let third proportional of 2 and 3 be y
so we get 2:3 =3:y
so we get
2y=9
y=4.5
Now ratio of of the mean proportional between 8.1 and 3.6 and the third proportional of 2 and 3 will be :5.4:4.5 = 6:5


Create a FREE account and get:

  • Free SSC Study Material - 18000 Questions
  • 230+ SSC previous papers with solutions PDF
  • 100+ SSC Online Tests for Free

cracku

Boost your Prep!

Download App