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Finding the Third Proportional to 71.88 and 169.63

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Solution

The third proportional to 71.88 and 169.63 is: 400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.88 : 169.63 = 169.63 : x
  2. Step 2: Convert to fraction form
    71.88/169.63 = 169.63/x
  3. Step 3: Cross multiply
    71.88x = 169.63 × 169.63
  4. Step 4: Simplify right side
    71.88x = 28,772.64
  5. Step 5: Solve for x
    x = 28,772.64/71.88
  6. Step 6: Final answer
    x = 400.32

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.