The fourth proportional to 0.3, 0.8 and 0.108 is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 0.288.
Calculations:
Let the fourth proportion be D
According to the question;
⇒ D × 0.8 = 0.3 × 0.108
⇒ D = 0.3 × 0.108/0.8 = 0.288