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Finding the Fourth Proportional to 1,654.87, 2,481.85 and 559

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Solution

The fourth proportional to 1,654.87, 2,481.85 and 559 is: 838.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.87 : 2,481.85 = 559 : x
  2. Step 2: Convert to fraction form
    1,654.87/2,481.85 = 559/x
  3. Step 3: Cross multiply
    1,654.87x = 2,481.85 × 559
  4. Step 4: Simplify right side
    1,654.87x = 1,387,354.15
  5. Step 5: Solve for x
    x = 1,387,354.15/1,654.87
  6. Step 6: Final answer
    x = 838.35

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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.