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Finding the Fourth Proportional to 575.44, 863.82 and 472.90

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Solution

The fourth proportional to 575.44, 863.82 and 472.90 is: 709.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.44 : 863.82 = 472.90 : x
  2. Step 2: Convert to fraction form
    575.44/863.82 = 472.90/x
  3. Step 3: Cross multiply
    575.44x = 863.82 × 472.90
  4. Step 4: Simplify right side
    575.44x = 408,500.48
  5. Step 5: Solve for x
    x = 408,500.48/575.44
  6. Step 6: Final answer
    x = 709.89

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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.