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Finding the Third Proportional to 8.86 and 21.52

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Solution

The third proportional to 8.86 and 21.52 is: 52.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.86 : 21.52 = 21.52 : x
  2. Step 2: Convert to fraction form
    8.86/21.52 = 21.52/x
  3. Step 3: Cross multiply
    8.86x = 21.52 × 21.52
  4. Step 4: Simplify right side
    8.86x = 462.92
  5. Step 5: Solve for x
    x = 462.92/8.86
  6. Step 6: Final answer
    x = 52.25

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.