Finding the Fourth Proportional to 438.92, 658.14 and 130.68
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Solution
The fourth proportional to 438.92, 658.14 and 130.68 is: 195.95
Step by Step Solution
- Step 1: Write the proportion equation
438.92 : 658.14 = 130.68 : x - Step 2: Convert to fraction form
438.92/658.14 = 130.68/x - Step 3: Cross multiply
438.92x = 658.14 × 130.68 - Step 4: Simplify right side
438.92x = 86,005.74 - Step 5: Solve for x
x = 86,005.74/438.92 - Step 6: Final answer
x = 195.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.