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Finding the Fourth Proportional to 539.64, 807.89 and 471.96

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Solution

The fourth proportional to 539.64, 807.89 and 471.96 is: 706.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.64 : 807.89 = 471.96 : x
  2. Step 2: Convert to fraction form
    539.64/807.89 = 471.96/x
  3. Step 3: Cross multiply
    539.64x = 807.89 × 471.96
  4. Step 4: Simplify right side
    539.64x = 381,289.40
  5. Step 5: Solve for x
    x = 381,289.40/539.64
  6. Step 6: Final answer
    x = 706.56

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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.