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Finding the Fourth Proportional to 197.22, 295.53 and 115.97

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Solution

The fourth proportional to 197.22, 295.53 and 115.97 is: 173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.22 : 295.53 = 115.97 : x
  2. Step 2: Convert to fraction form
    197.22/295.53 = 115.97/x
  3. Step 3: Cross multiply
    197.22x = 295.53 × 115.97
  4. Step 4: Simplify right side
    197.22x = 34,272.61
  5. Step 5: Solve for x
    x = 34,272.61/197.22
  6. Step 6: Final answer
    x = 173.78

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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.