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Finding the Third Proportional to 2.56 and 2.89

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Solution

The third proportional to 2.56 and 2.89 is: 3.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.56 : 2.89 = 2.89 : x
  2. Step 2: Convert to fraction form
    2.56/2.89 = 2.89/x
  3. Step 3: Cross multiply
    2.56x = 2.89 × 2.89
  4. Step 4: Simplify right side
    2.56x = 8.36
  5. Step 5: Solve for x
    x = 8.36/2.56
  6. Step 6: Final answer
    x = 3.27

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.