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Finding the Fourth Proportional to 658.28, 908.43 and 363.55

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Solution

The fourth proportional to 658.28, 908.43 and 363.55 is: 501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.28 : 908.43 = 363.55 : x
  2. Step 2: Convert to fraction form
    658.28/908.43 = 363.55/x
  3. Step 3: Cross multiply
    658.28x = 908.43 × 363.55
  4. Step 4: Simplify right side
    658.28x = 330,259.73
  5. Step 5: Solve for x
    x = 330,259.73/658.28
  6. Step 6: Final answer
    x = 501.70

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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.