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Finding the Fourth Proportional to 226.32, 339.96 and 140.88

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Solution

The fourth proportional to 226.32, 339.96 and 140.88 is: 211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.32 : 339.96 = 140.88 : x
  2. Step 2: Convert to fraction form
    226.32/339.96 = 140.88/x
  3. Step 3: Cross multiply
    226.32x = 339.96 × 140.88
  4. Step 4: Simplify right side
    226.32x = 47,893.56
  5. Step 5: Solve for x
    x = 47,893.56/226.32
  6. Step 6: Final answer
    x = 211.62

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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.