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Finding the Fourth Proportional to 193.89, 267.60 and 115.22

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Solution

The fourth proportional to 193.89, 267.60 and 115.22 is: 159.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.89 : 267.60 = 115.22 : x
  2. Step 2: Convert to fraction form
    193.89/267.60 = 115.22/x
  3. Step 3: Cross multiply
    193.89x = 267.60 × 115.22
  4. Step 4: Simplify right side
    193.89x = 30,833.97
  5. Step 5: Solve for x
    x = 30,833.97/193.89
  6. Step 6: Final answer
    x = 159.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.