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Finding the Fourth Proportional to 220.26, 330.57 and 112.08

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Solution

The fourth proportional to 220.26, 330.57 and 112.08 is: 168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.26 : 330.57 = 112.08 : x
  2. Step 2: Convert to fraction form
    220.26/330.57 = 112.08/x
  3. Step 3: Cross multiply
    220.26x = 330.57 × 112.08
  4. Step 4: Simplify right side
    220.26x = 37,050.29
  5. Step 5: Solve for x
    x = 37,050.29/220.26
  6. Step 6: Final answer
    x = 168.21

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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.