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Finding the Fourth Proportional to 226.81, 340.33 and 89.86

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Solution

The fourth proportional to 226.81, 340.33 and 89.86 is: 134.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.81 : 340.33 = 89.86 : x
  2. Step 2: Convert to fraction form
    226.81/340.33 = 89.86/x
  3. Step 3: Cross multiply
    226.81x = 340.33 × 89.86
  4. Step 4: Simplify right side
    226.81x = 30,580.35
  5. Step 5: Solve for x
    x = 30,580.35/226.81
  6. Step 6: Final answer
    x = 134.83

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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.