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Finding the Fourth Proportional to 625.75, 863.17 and 376.91

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Solution

The fourth proportional to 625.75, 863.17 and 376.91 is: 519.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.75 : 863.17 = 376.91 : x
  2. Step 2: Convert to fraction form
    625.75/863.17 = 376.91/x
  3. Step 3: Cross multiply
    625.75x = 863.17 × 376.91
  4. Step 4: Simplify right side
    625.75x = 325,337.40
  5. Step 5: Solve for x
    x = 325,337.40/625.75
  6. Step 6: Final answer
    x = 519.92

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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.