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Finding the Third Proportional to 12.13 and 20.50

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Solution

The third proportional to 12.13 and 20.50 is: 34.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.13 : 20.50 = 20.50 : x
  2. Step 2: Convert to fraction form
    12.13/20.50 = 20.50/x
  3. Step 3: Cross multiply
    12.13x = 20.50 × 20.50
  4. Step 4: Simplify right side
    12.13x = 420.25
  5. Step 5: Solve for x
    x = 420.25/12.13
  6. Step 6: Final answer
    x = 34.66

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.