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Finding the Fourth Proportional to 625.35, 937.10 and 579.78

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Solution

The fourth proportional to 625.35, 937.10 and 579.78 is: 868.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.35 : 937.10 = 579.78 : x
  2. Step 2: Convert to fraction form
    625.35/937.10 = 579.78/x
  3. Step 3: Cross multiply
    625.35x = 937.10 × 579.78
  4. Step 4: Simplify right side
    625.35x = 543,308.94
  5. Step 5: Solve for x
    x = 543,308.94/625.35
  6. Step 6: Final answer
    x = 868.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.