Finding the Fourth Proportional to 658.67, 908.93 and 378.99
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Solution
The fourth proportional to 658.67, 908.93 and 378.99 is: 522.99
Step by Step Solution
- Step 1: Write the proportion equation
658.67 : 908.93 = 378.99 : x - Step 2: Convert to fraction form
658.67/908.93 = 378.99/x - Step 3: Cross multiply
658.67x = 908.93 × 378.99 - Step 4: Simplify right side
658.67x = 344,473.49 - Step 5: Solve for x
x = 344,473.49/658.67 - Step 6: Final answer
x = 522.99
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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.