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Finding the Fourth Proportional to 349.56, 523.92 and 144.09

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Solution

The fourth proportional to 349.56, 523.92 and 144.09 is: 215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.56 : 523.92 = 144.09 : x
  2. Step 2: Convert to fraction form
    349.56/523.92 = 144.09/x
  3. Step 3: Cross multiply
    349.56x = 523.92 × 144.09
  4. Step 4: Simplify right side
    349.56x = 75,491.63
  5. Step 5: Solve for x
    x = 75,491.63/349.56
  6. Step 6: Final answer
    x = 215.96

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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.