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Finding the Fourth Proportional to 439.05, 658.48 and 165.16

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Solution

The fourth proportional to 439.05, 658.48 and 165.16 is: 247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.05 : 658.48 = 165.16 : x
  2. Step 2: Convert to fraction form
    439.05/658.48 = 165.16/x
  3. Step 3: Cross multiply
    439.05x = 658.48 × 165.16
  4. Step 4: Simplify right side
    439.05x = 108,754.56
  5. Step 5: Solve for x
    x = 108,754.56/439.05
  6. Step 6: Final answer
    x = 247.70

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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.