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Finding the Fourth Proportional to 402.87, 604.61 and 159.27

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Solution

The fourth proportional to 402.87, 604.61 and 159.27 is: 239.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.87 : 604.61 = 159.27 : x
  2. Step 2: Convert to fraction form
    402.87/604.61 = 159.27/x
  3. Step 3: Cross multiply
    402.87x = 604.61 × 159.27
  4. Step 4: Simplify right side
    402.87x = 96,296.23
  5. Step 5: Solve for x
    x = 96,296.23/402.87
  6. Step 6: Final answer
    x = 239.03

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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.