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Finding the Fourth Proportional to 193.95, 267.66 and 131.85

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Solution

The fourth proportional to 193.95, 267.66 and 131.85 is: 181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.95 : 267.66 = 131.85 : x
  2. Step 2: Convert to fraction form
    193.95/267.66 = 131.85/x
  3. Step 3: Cross multiply
    193.95x = 267.66 × 131.85
  4. Step 4: Simplify right side
    193.95x = 35,290.97
  5. Step 5: Solve for x
    x = 35,290.97/193.95
  6. Step 6: Final answer
    x = 181.96

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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.