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Finding the Fourth Proportional to 226.11, 339.10 and 87.26

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Solution

The fourth proportional to 226.11, 339.10 and 87.26 is: 130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.11 : 339.10 = 87.26 : x
  2. Step 2: Convert to fraction form
    226.11/339.10 = 87.26/x
  3. Step 3: Cross multiply
    226.11x = 339.10 × 87.26
  4. Step 4: Simplify right side
    226.11x = 29,588.28
  5. Step 5: Solve for x
    x = 29,588.28/226.11
  6. Step 6: Final answer
    x = 130.86

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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.