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Finding the Fourth Proportional to 195.97, 293.80 and 80.38

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Solution

The fourth proportional to 195.97, 293.80 and 80.38 is: 120.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.97 : 293.80 = 80.38 : x
  2. Step 2: Convert to fraction form
    195.97/293.80 = 80.38/x
  3. Step 3: Cross multiply
    195.97x = 293.80 × 80.38
  4. Step 4: Simplify right side
    195.97x = 23,615.64
  5. Step 5: Solve for x
    x = 23,615.64/195.97
  6. Step 6: Final answer
    x = 120.51

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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.