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Finding the Fourth Proportional to 476.97, 658.22 and 280.59

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Solution

The fourth proportional to 476.97, 658.22 and 280.59 is: 387.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.97 : 658.22 = 280.59 : x
  2. Step 2: Convert to fraction form
    476.97/658.22 = 280.59/x
  3. Step 3: Cross multiply
    476.97x = 658.22 × 280.59
  4. Step 4: Simplify right side
    476.97x = 184,689.95
  5. Step 5: Solve for x
    x = 184,689.95/476.97
  6. Step 6: Final answer
    x = 387.22

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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.