Find the fourth proportional to the numbers 60, 48, 30.

1. 48
2. 36
3. 24
4. None

Finding the Fourth Proportional

Understanding the concept: Four numbers a, b, c, and d are said to be in proportion if a:b = c:d. Here, d is called the fourth proportional to a, b, and c.

Solution: Let the fourth proportional be x.

So, we have:

• 60 : 48 = 30 : x

Cross-multiplying, we get:

• 60 * x = 48 * 30

Solving for x:

• x = (48 * 30) / 60
• x = 24

Therefore, the fourth proportional to 60, 48, and 30 is 24.

So, the correct answer is (C) 24.