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Finding the Third Proportional to 2.39 and 3.61

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Solution

The third proportional to 2.39 and 3.61 is: 5.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.39 : 3.61 = 3.61 : x
  2. Step 2: Convert to fraction form
    2.39/3.61 = 3.61/x
  3. Step 3: Cross multiply
    2.39x = 3.61 × 3.61
  4. Step 4: Simplify right side
    2.39x = 13.03
  5. Step 5: Solve for x
    x = 13.03/2.39
  6. Step 6: Final answer
    x = 5.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.