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Finding the Fourth Proportional to 402.88, 604.38 and 159.52

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Solution

The fourth proportional to 402.88, 604.38 and 159.52 is: 239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.88 : 604.38 = 159.52 : x
  2. Step 2: Convert to fraction form
    402.88/604.38 = 159.52/x
  3. Step 3: Cross multiply
    402.88x = 604.38 × 159.52
  4. Step 4: Simplify right side
    402.88x = 96,410.70
  5. Step 5: Solve for x
    x = 96,410.70/402.88
  6. Step 6: Final answer
    x = 239.30

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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.