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Finding the Fourth Proportional to 147.62, 221.24 and 113.25

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Solution

The fourth proportional to 147.62, 221.24 and 113.25 is: 169.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.62 : 221.24 = 113.25 : x
  2. Step 2: Convert to fraction form
    147.62/221.24 = 113.25/x
  3. Step 3: Cross multiply
    147.62x = 221.24 × 113.25
  4. Step 4: Simplify right side
    147.62x = 25,054.86
  5. Step 5: Solve for x
    x = 25,054.86/147.62
  6. Step 6: Final answer
    x = 169.73

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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.