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Finding the Fourth Proportional to 220.44, 330.44 and 133.56

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Solution

The fourth proportional to 220.44, 330.44 and 133.56 is: 200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.44 : 330.44 = 133.56 : x
  2. Step 2: Convert to fraction form
    220.44/330.44 = 133.56/x
  3. Step 3: Cross multiply
    220.44x = 330.44 × 133.56
  4. Step 4: Simplify right side
    220.44x = 44,132.90
  5. Step 5: Solve for x
    x = 44,132.90/220.44
  6. Step 6: Final answer
    x = 200.20

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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.