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Finding the Fourth Proportional to 624.30, 865.08 and 609.94

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Solution

The fourth proportional to 624.30, 865.08 and 609.94 is: 845.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.30 : 865.08 = 609.94 : x
  2. Step 2: Convert to fraction form
    624.30/865.08 = 609.94/x
  3. Step 3: Cross multiply
    624.30x = 865.08 × 609.94
  4. Step 4: Simplify right side
    624.30x = 527,646.90
  5. Step 5: Solve for x
    x = 527,646.90/624.30
  6. Step 6: Final answer
    x = 845.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.