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Finding the Fourth Proportional to 624.52, 861.33 and 550.90

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Solution

The fourth proportional to 624.52, 861.33 and 550.90 is: 759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.52 : 861.33 = 550.90 : x
  2. Step 2: Convert to fraction form
    624.52/861.33 = 550.90/x
  3. Step 3: Cross multiply
    624.52x = 861.33 × 550.90
  4. Step 4: Simplify right side
    624.52x = 474,506.70
  5. Step 5: Solve for x
    x = 474,506.70/624.52
  6. Step 6: Final answer
    x = 759.79

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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.