V K Raman and S N Sharma Solutions for Exercise 3: CONCEPT REVISION TEST-6

Same number (except $0$) can be added or subtracted from both the terms of a ratio.

When three terms are in continued proportion then the second term is the mean proportional for the other two terms.

In a proportion, if the second and third terms are the same then the fourth term is called the third proportional.

$2 : 3$ is the simplest form of $20$ : _____

$5 : 4.2 :: 20 :$ _____

$7 :$ _____ :: $2.4 : 9$

The mean proportional between $5$ and $125$ is _____

The third proportional to $5$ and$10$ is _____