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Finding the Fourth Proportional to 354.93, 531.92 and 159.89

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Solution

The fourth proportional to 354.93, 531.92 and 159.89 is: 239.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.93 : 531.92 = 159.89 : x
  2. Step 2: Convert to fraction form
    354.93/531.92 = 159.89/x
  3. Step 3: Cross multiply
    354.93x = 531.92 × 159.89
  4. Step 4: Simplify right side
    354.93x = 85,049.22
  5. Step 5: Solve for x
    x = 85,049.22/354.93
  6. Step 6: Final answer
    x = 239.62

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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.