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Finding the Fourth Proportional to 226.11, 339.21 and 89.19

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Solution

The fourth proportional to 226.11, 339.21 and 89.19 is: 133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.11 : 339.21 = 89.19 : x
  2. Step 2: Convert to fraction form
    226.11/339.21 = 89.19/x
  3. Step 3: Cross multiply
    226.11x = 339.21 × 89.19
  4. Step 4: Simplify right side
    226.11x = 30,254.14
  5. Step 5: Solve for x
    x = 30,254.14/226.11
  6. Step 6: Final answer
    x = 133.80

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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.