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Finding the Third Proportional to 11.73 and 18.93

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Solution

The third proportional to 11.73 and 18.93 is: 30.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.73 : 18.93 = 18.93 : x
  2. Step 2: Convert to fraction form
    11.73/18.93 = 18.93/x
  3. Step 3: Cross multiply
    11.73x = 18.93 × 18.93
  4. Step 4: Simplify right side
    11.73x = 358.23
  5. Step 5: Solve for x
    x = 358.23/11.73
  6. Step 6: Final answer
    x = 30.55

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.