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Finding the Fourth Proportional to 226.31, 339.24 and 89.31

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Solution

The fourth proportional to 226.31, 339.24 and 89.31 is: 133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.31 : 339.24 = 89.31 : x
  2. Step 2: Convert to fraction form
    226.31/339.24 = 89.31/x
  3. Step 3: Cross multiply
    226.31x = 339.24 × 89.31
  4. Step 4: Simplify right side
    226.31x = 30,295.83
  5. Step 5: Solve for x
    x = 30,295.83/226.31
  6. Step 6: Final answer
    x = 133.87

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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.