Finding the Fourth Proportional to 438.99, 658.17 and 207.75
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Solution
The fourth proportional to 438.99, 658.17 and 207.75 is: 311.47
Step by Step Solution
- Step 1: Write the proportion equation
438.99 : 658.17 = 207.75 : x - Step 2: Convert to fraction form
438.99/658.17 = 207.75/x - Step 3: Cross multiply
438.99x = 658.17 × 207.75 - Step 4: Simplify right side
438.99x = 136,731.53 - Step 5: Solve for x
x = 136,731.53/438.99 - Step 6: Final answer
x = 311.47
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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.