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Finding the Third Proportional to 194.06 and 399.38

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Solution

The third proportional to 194.06 and 399.38 is: 821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.06 : 399.38 = 399.38 : x
  2. Step 2: Convert to fraction form
    194.06/399.38 = 399.38/x
  3. Step 3: Cross multiply
    194.06x = 399.38 × 399.38
  4. Step 4: Simplify right side
    194.06x = 159,500.39
  5. Step 5: Solve for x
    x = 159,500.39/194.06
  6. Step 6: Final answer
    x = 821.90

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.