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Finding the Third Proportional to 8.55 and 18.44

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Solution

The third proportional to 8.55 and 18.44 is: 39.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.55 : 18.44 = 18.44 : x
  2. Step 2: Convert to fraction form
    8.55/18.44 = 18.44/x
  3. Step 3: Cross multiply
    8.55x = 18.44 × 18.44
  4. Step 4: Simplify right side
    8.55x = 339.87
  5. Step 5: Solve for x
    x = 339.87/8.55
  6. Step 6: Final answer
    x = 39.74

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.