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Finding the Fourth Proportional to 220.18, 330.11 and 104.56

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Solution

The fourth proportional to 220.18, 330.11 and 104.56 is: 156.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.18 : 330.11 = 104.56 : x
  2. Step 2: Convert to fraction form
    220.18/330.11 = 104.56/x
  3. Step 3: Cross multiply
    220.18x = 330.11 × 104.56
  4. Step 4: Simplify right side
    220.18x = 34,516.30
  5. Step 5: Solve for x
    x = 34,516.30/220.18
  6. Step 6: Final answer
    x = 156.76

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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.