Finding the Fourth Proportional to 42.18, 63.29 and 16.53
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Solution
The fourth proportional to 42.18, 63.29 and 16.53 is: 24.80
Step by Step Solution
- Step 1: Write the proportion equation
42.18 : 63.29 = 16.53 : x - Step 2: Convert to fraction form
42.18/63.29 = 16.53/x - Step 3: Cross multiply
42.18x = 63.29 × 16.53 - Step 4: Simplify right side
42.18x = 1,046.18 - Step 5: Solve for x
x = 1,046.18/42.18 - Step 6: Final answer
x = 24.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.