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Finding the Fourth Proportional to 402.68, 604.11 and 159.20

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Solution

The fourth proportional to 402.68, 604.11 and 159.20 is: 238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.68 : 604.11 = 159.20 : x
  2. Step 2: Convert to fraction form
    402.68/604.11 = 159.20/x
  3. Step 3: Cross multiply
    402.68x = 604.11 × 159.20
  4. Step 4: Simplify right side
    402.68x = 96,174.31
  5. Step 5: Solve for x
    x = 96,174.31/402.68
  6. Step 6: Final answer
    x = 238.84

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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.