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Finding the Third Proportional to 23.34 and 39.38

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Solution

The third proportional to 23.34 and 39.38 is: 66.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.34 : 39.38 = 39.38 : x
  2. Step 2: Convert to fraction form
    23.34/39.38 = 39.38/x
  3. Step 3: Cross multiply
    23.34x = 39.38 × 39.38
  4. Step 4: Simplify right side
    23.34x = 1,550.39
  5. Step 5: Solve for x
    x = 1,550.39/23.34
  6. Step 6: Final answer
    x = 66.42

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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.