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Finding the Fourth Proportional to 226.92, 338.67 and 221.45

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Solution

The fourth proportional to 226.92, 338.67 and 221.45 is: 330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.92 : 338.67 = 221.45 : x
  2. Step 2: Convert to fraction form
    226.92/338.67 = 221.45/x
  3. Step 3: Cross multiply
    226.92x = 338.67 × 221.45
  4. Step 4: Simplify right side
    226.92x = 74,996.78
  5. Step 5: Solve for x
    x = 74,996.78/226.92
  6. Step 6: Final answer
    x = 330.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.