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Finding the Fourth Proportional to 625.20, 937.79 and 259.73

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Solution

The fourth proportional to 625.20, 937.79 and 259.73 is: 389.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.20 : 937.79 = 259.73 : x
  2. Step 2: Convert to fraction form
    625.20/937.79 = 259.73/x
  3. Step 3: Cross multiply
    625.20x = 937.79 × 259.73
  4. Step 4: Simplify right side
    625.20x = 243,572.20
  5. Step 5: Solve for x
    x = 243,572.20/625.20
  6. Step 6: Final answer
    x = 389.59

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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.