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Finding the Fourth Proportional to 658.49, 908.78 and 363.83

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Solution

The fourth proportional to 658.49, 908.78 and 363.83 is: 502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.49 : 908.78 = 363.83 : x
  2. Step 2: Convert to fraction form
    658.49/908.78 = 363.83/x
  3. Step 3: Cross multiply
    658.49x = 908.78 × 363.83
  4. Step 4: Simplify right side
    658.49x = 330,635.06
  5. Step 5: Solve for x
    x = 330,635.06/658.49
  6. Step 6: Final answer
    x = 502.11

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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.