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Finding the Third Proportional to 71.13 and 153.63

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Solution

The third proportional to 71.13 and 153.63 is: 331.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.13 : 153.63 = 153.63 : x
  2. Step 2: Convert to fraction form
    71.13/153.63 = 153.63/x
  3. Step 3: Cross multiply
    71.13x = 153.63 × 153.63
  4. Step 4: Simplify right side
    71.13x = 23,600.64
  5. Step 5: Solve for x
    x = 23,600.64/71.13
  6. Step 6: Final answer
    x = 331.82

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.