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Finding the Fourth Proportional to 625.28, 937.49 and 278.43

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Solution

The fourth proportional to 625.28, 937.49 and 278.43 is: 417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.28 : 937.49 = 278.43 : x
  2. Step 2: Convert to fraction form
    625.28/937.49 = 278.43/x
  3. Step 3: Cross multiply
    625.28x = 937.49 × 278.43
  4. Step 4: Simplify right side
    625.28x = 261,025.34
  5. Step 5: Solve for x
    x = 261,025.34/625.28
  6. Step 6: Final answer
    x = 417.45

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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.