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Finding the Fourth Proportional to 220.13, 330.28 and 104.59

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Solution

The fourth proportional to 220.13, 330.28 and 104.59 is: 156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.13 : 330.28 = 104.59 : x
  2. Step 2: Convert to fraction form
    220.13/330.28 = 104.59/x
  3. Step 3: Cross multiply
    220.13x = 330.28 × 104.59
  4. Step 4: Simplify right side
    220.13x = 34,544.14
  5. Step 5: Solve for x
    x = 34,544.14/220.13
  6. Step 6: Final answer
    x = 156.93

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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.