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Finding the Third Proportional to 3.12 and 6.51

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Solution

The third proportional to 3.12 and 6.51 is: 13.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.12 : 6.51 = 6.51 : x
  2. Step 2: Convert to fraction form
    3.12/6.51 = 6.51/x
  3. Step 3: Cross multiply
    3.12x = 6.51 × 6.51
  4. Step 4: Simplify right side
    3.12x = 42.37
  5. Step 5: Solve for x
    x = 42.37/3.12
  6. Step 6: Final answer
    x = 13.56

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.