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Finding the Fourth Proportional to 226.42, 337.91 and 220.66

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Solution

The fourth proportional to 226.42, 337.91 and 220.66 is: 329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.42 : 337.91 = 220.66 : x
  2. Step 2: Convert to fraction form
    226.42/337.91 = 220.66/x
  3. Step 3: Cross multiply
    226.42x = 337.91 × 220.66
  4. Step 4: Simplify right side
    226.42x = 74,563.22
  5. Step 5: Solve for x
    x = 74,563.22/226.42
  6. Step 6: Final answer
    x = 329.31

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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.