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Finding the Third Proportional to 193.97 and 391.69

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Solution

The third proportional to 193.97 and 391.69 is: 790.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.97 : 391.69 = 391.69 : x
  2. Step 2: Convert to fraction form
    193.97/391.69 = 391.69/x
  3. Step 3: Cross multiply
    193.97x = 391.69 × 391.69
  4. Step 4: Simplify right side
    193.97x = 153,419.10
  5. Step 5: Solve for x
    x = 153,419.10/193.97
  6. Step 6: Final answer
    x = 790.95

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.