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Finding the Fourth Proportional to 625, 863.04 and 470.56

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Solution

The fourth proportional to 625, 863.04 and 470.56 is: 649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625 : 863.04 = 470.56 : x
  2. Step 2: Convert to fraction form
    625/863.04 = 470.56/x
  3. Step 3: Cross multiply
    625x = 863.04 × 470.56
  4. Step 4: Simplify right side
    625x = 406,112.10
  5. Step 5: Solve for x
    x = 406,112.10/625
  6. Step 6: Final answer
    x = 649.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.