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Finding the Third Proportional to 15.22 and 18.49

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Solution

The third proportional to 15.22 and 18.49 is: 22.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.22 : 18.49 = 18.49 : x
  2. Step 2: Convert to fraction form
    15.22/18.49 = 18.49/x
  3. Step 3: Cross multiply
    15.22x = 18.49 × 18.49
  4. Step 4: Simplify right side
    15.22x = 342.05
  5. Step 5: Solve for x
    x = 342.05/15.22
  6. Step 6: Final answer
    x = 22.47

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.