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Finding the Fourth Proportional to 624.62, 861.87 and 375.88

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Solution

The fourth proportional to 624.62, 861.87 and 375.88 is: 518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.62 : 861.87 = 375.88 : x
  2. Step 2: Convert to fraction form
    624.62/861.87 = 375.88/x
  3. Step 3: Cross multiply
    624.62x = 861.87 × 375.88
  4. Step 4: Simplify right side
    624.62x = 323,959.70
  5. Step 5: Solve for x
    x = 323,959.70/624.62
  6. Step 6: Final answer
    x = 518.65

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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.