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Finding the Fourth Proportional to 349.62, 523.96 and 144.06

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Solution

The fourth proportional to 349.62, 523.96 and 144.06 is: 215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.62 : 523.96 = 144.06 : x
  2. Step 2: Convert to fraction form
    349.62/523.96 = 144.06/x
  3. Step 3: Cross multiply
    349.62x = 523.96 × 144.06
  4. Step 4: Simplify right side
    349.62x = 75,481.68
  5. Step 5: Solve for x
    x = 75,481.68/349.62
  6. Step 6: Final answer
    x = 215.90

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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.