Finding the Fourth Proportional to 39.72, 54.83 and 24.99
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Solution
The fourth proportional to 39.72, 54.83 and 24.99 is: 34.50
Step by Step Solution
- Step 1: Write the proportion equation
39.72 : 54.83 = 24.99 : x - Step 2: Convert to fraction form
39.72/54.83 = 24.99/x - Step 3: Cross multiply
39.72x = 54.83 × 24.99 - Step 4: Simplify right side
39.72x = 1,370.20 - Step 5: Solve for x
x = 1,370.20/39.72 - Step 6: Final answer
x = 34.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.