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Finding the Third Proportional to 12.28 and 28.69

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Solution

The third proportional to 12.28 and 28.69 is: 67.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.28 : 28.69 = 28.69 : x
  2. Step 2: Convert to fraction form
    12.28/28.69 = 28.69/x
  3. Step 3: Cross multiply
    12.28x = 28.69 × 28.69
  4. Step 4: Simplify right side
    12.28x = 822.97
  5. Step 5: Solve for x
    x = 822.97/12.28
  6. Step 6: Final answer
    x = 67.01

Related Problems

Find third proportional to 6.14 and 14.34
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.