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Finding the Third Proportional to 5.71 and 15.69

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Solution

The third proportional to 5.71 and 15.69 is: 43.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.71 : 15.69 = 15.69 : x
  2. Step 2: Convert to fraction form
    5.71/15.69 = 15.69/x
  3. Step 3: Cross multiply
    5.71x = 15.69 × 15.69
  4. Step 4: Simplify right side
    5.71x = 246.33
  5. Step 5: Solve for x
    x = 246.33/5.71
  6. Step 6: Final answer
    x = 43.16

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Why These Related Problems?

These problems maintain the same ratio (2.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.