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Finding the Fourth Proportional to 625.15, 937.73 and 381.19

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Solution

The fourth proportional to 625.15, 937.73 and 381.19 is: 571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.15 : 937.73 = 381.19 : x
  2. Step 2: Convert to fraction form
    625.15/937.73 = 381.19/x
  3. Step 3: Cross multiply
    625.15x = 937.73 × 381.19
  4. Step 4: Simplify right side
    625.15x = 357,451.52
  5. Step 5: Solve for x
    x = 357,451.52/625.15
  6. Step 6: Final answer
    x = 571.78

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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.