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Finding the Third Proportional to 6.70 and 11.51

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Solution

The third proportional to 6.70 and 11.51 is: 19.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.70 : 11.51 = 11.51 : x
  2. Step 2: Convert to fraction form
    6.70/11.51 = 11.51/x
  3. Step 3: Cross multiply
    6.70x = 11.51 × 11.51
  4. Step 4: Simplify right side
    6.70x = 132.37
  5. Step 5: Solve for x
    x = 132.37/6.70
  6. Step 6: Final answer
    x = 19.74

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Why These Related Problems?

These problems maintain the same ratio (1.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.