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Finding the Third Proportional to 8.30 and 17.86

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Solution

The third proportional to 8.30 and 17.86 is: 38.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.30 : 17.86 = 17.86 : x
  2. Step 2: Convert to fraction form
    8.30/17.86 = 17.86/x
  3. Step 3: Cross multiply
    8.30x = 17.86 × 17.86
  4. Step 4: Simplify right side
    8.30x = 318.96
  5. Step 5: Solve for x
    x = 318.96/8.30
  6. Step 6: Final answer
    x = 38.44

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.