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Finding the Third Proportional to 3.71 and 8.10

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Solution

The third proportional to 3.71 and 8.10 is: 17.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.71 : 8.10 = 8.10 : x
  2. Step 2: Convert to fraction form
    3.71/8.10 = 8.10/x
  3. Step 3: Cross multiply
    3.71x = 8.10 × 8.10
  4. Step 4: Simplify right side
    3.71x = 65.58
  5. Step 5: Solve for x
    x = 65.58/3.71
  6. Step 6: Final answer
    x = 17.69

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.