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Finding the Third Proportional to 2.06 and 3.11

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Solution

The third proportional to 2.06 and 3.11 is: 4.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.06 : 3.11 = 3.11 : x
  2. Step 2: Convert to fraction form
    2.06/3.11 = 3.11/x
  3. Step 3: Cross multiply
    2.06x = 3.11 × 3.11
  4. Step 4: Simplify right side
    2.06x = 9.68
  5. Step 5: Solve for x
    x = 9.68/2.06
  6. Step 6: Final answer
    x = 4.71

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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.