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Finding the Fourth Proportional to 625.40, 938.77 and 529.08

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Solution

The fourth proportional to 625.40, 938.77 and 529.08 is: 794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.40 : 938.77 = 529.08 : x
  2. Step 2: Convert to fraction form
    625.40/938.77 = 529.08/x
  3. Step 3: Cross multiply
    625.40x = 938.77 × 529.08
  4. Step 4: Simplify right side
    625.40x = 496,687.85
  5. Step 5: Solve for x
    x = 496,687.85/625.40
  6. Step 6: Final answer
    x = 794.19

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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.