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Finding the Third Proportional to 12.13 and 18.63

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Solution

The third proportional to 12.13 and 18.63 is: 28.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.13 : 18.63 = 18.63 : x
  2. Step 2: Convert to fraction form
    12.13/18.63 = 18.63/x
  3. Step 3: Cross multiply
    12.13x = 18.63 × 18.63
  4. Step 4: Simplify right side
    12.13x = 346.89
  5. Step 5: Solve for x
    x = 346.89/12.13
  6. Step 6: Final answer
    x = 28.61

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.