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Finding the Fourth Proportional to 625.37, 938.15 and 278.82

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Solution

The fourth proportional to 625.37, 938.15 and 278.82 is: 418.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.37 : 938.15 = 278.82 : x
  2. Step 2: Convert to fraction form
    625.37/938.15 = 278.82/x
  3. Step 3: Cross multiply
    625.37x = 938.15 × 278.82
  4. Step 4: Simplify right side
    625.37x = 261,573.59
  5. Step 5: Solve for x
    x = 261,573.59/625.37
  6. Step 6: Final answer
    x = 418.27

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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.