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Finding the Fourth Proportional to 477.43, 658.94 and 280.94

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Solution

The fourth proportional to 477.43, 658.94 and 280.94 is: 387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.43 : 658.94 = 280.94 : x
  2. Step 2: Convert to fraction form
    477.43/658.94 = 280.94/x
  3. Step 3: Cross multiply
    477.43x = 658.94 × 280.94
  4. Step 4: Simplify right side
    477.43x = 185,117.90
  5. Step 5: Solve for x
    x = 185,117.90/477.43
  6. Step 6: Final answer
    x = 387.74

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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.