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Finding the Third Proportional to 2.72 and 6.51

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Solution

The third proportional to 2.72 and 6.51 is: 15.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.72 : 6.51 = 6.51 : x
  2. Step 2: Convert to fraction form
    2.72/6.51 = 6.51/x
  3. Step 3: Cross multiply
    2.72x = 6.51 × 6.51
  4. Step 4: Simplify right side
    2.72x = 42.38
  5. Step 5: Solve for x
    x = 42.38/2.72
  6. Step 6: Final answer
    x = 15.58

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.