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Finding the Fourth Proportional to 625.90, 863.99 and 560.29

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Solution

The fourth proportional to 625.90, 863.99 and 560.29 is: 773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.90 : 863.99 = 560.29 : x
  2. Step 2: Convert to fraction form
    625.90/863.99 = 560.29/x
  3. Step 3: Cross multiply
    625.90x = 863.99 × 560.29
  4. Step 4: Simplify right side
    625.90x = 484,084.96
  5. Step 5: Solve for x
    x = 484,084.96/625.90
  6. Step 6: Final answer
    x = 773.42

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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.