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Finding the Third Proportional to 15.56 and 26.11

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Solution

The third proportional to 15.56 and 26.11 is: 43.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.56 : 26.11 = 26.11 : x
  2. Step 2: Convert to fraction form
    15.56/26.11 = 26.11/x
  3. Step 3: Cross multiply
    15.56x = 26.11 × 26.11
  4. Step 4: Simplify right side
    15.56x = 681.70
  5. Step 5: Solve for x
    x = 681.70/15.56
  6. Step 6: Final answer
    x = 43.80

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.