CUET Preparation Today
CUET
General Aptitude Test
Numerical Ability
Ratio & Proportion
What is the fourth proportional to 7, 15 and 21?
29
30
48
45
Using the direct formula,
Fourth proportion of a, b and c = \(\frac{b\; \times\; c}{a}\)
Fourth proportion = \(\frac{15\; \times\; 21}{7}\)
= 45
