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Finding the Third Proportional to 5.56 and 10.94

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Solution

The third proportional to 5.56 and 10.94 is: 21.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.56 : 10.94 = 10.94 : x
  2. Step 2: Convert to fraction form
    5.56/10.94 = 10.94/x
  3. Step 3: Cross multiply
    5.56x = 10.94 × 10.94
  4. Step 4: Simplify right side
    5.56x = 119.61
  5. Step 5: Solve for x
    x = 119.61/5.56
  6. Step 6: Final answer
    x = 21.51

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.