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Finding the Fourth Proportional to 625.08, 862.38 and 624.12

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Solution

The fourth proportional to 625.08, 862.38 and 624.12 is: 861.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.08 : 862.38 = 624.12 : x
  2. Step 2: Convert to fraction form
    625.08/862.38 = 624.12/x
  3. Step 3: Cross multiply
    625.08x = 862.38 × 624.12
  4. Step 4: Simplify right side
    625.08x = 538,228.61
  5. Step 5: Solve for x
    x = 538,228.61/625.08
  6. Step 6: Final answer
    x = 861.06

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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.