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Finding the Fourth Proportional to 226.32, 337.74 and 221.21

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Solution

The fourth proportional to 226.32, 337.74 and 221.21 is: 330.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.32 : 337.74 = 221.21 : x
  2. Step 2: Convert to fraction form
    226.32/337.74 = 221.21/x
  3. Step 3: Cross multiply
    226.32x = 337.74 × 221.21
  4. Step 4: Simplify right side
    226.32x = 74,711.13
  5. Step 5: Solve for x
    x = 74,711.13/226.32
  6. Step 6: Final answer
    x = 330.11

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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.