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Finding the Third Proportional to 193.69 and 422.81

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Solution

The third proportional to 193.69 and 422.81 is: 922.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.69 : 422.81 = 422.81 : x
  2. Step 2: Convert to fraction form
    193.69/422.81 = 422.81/x
  3. Step 3: Cross multiply
    193.69x = 422.81 × 422.81
  4. Step 4: Simplify right side
    193.69x = 178,770.41
  5. Step 5: Solve for x
    x = 178,770.41/193.69
  6. Step 6: Final answer
    x = 922.98

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.