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Finding the Fourth Proportional to 625.70, 929.48 and 614.90

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Solution

The fourth proportional to 625.70, 929.48 and 614.90 is: 913.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.70 : 929.48 = 614.90 : x
  2. Step 2: Convert to fraction form
    625.70/929.48 = 614.90/x
  3. Step 3: Cross multiply
    625.70x = 929.48 × 614.90
  4. Step 4: Simplify right side
    625.70x = 571,537.25
  5. Step 5: Solve for x
    x = 571,537.25/625.70
  6. Step 6: Final answer
    x = 913.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.