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Finding the Third Proportional to 157.73 and 242.12

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Solution

The third proportional to 157.73 and 242.12 is: 371.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.73 : 242.12 = 242.12 : x
  2. Step 2: Convert to fraction form
    157.73/242.12 = 242.12/x
  3. Step 3: Cross multiply
    157.73x = 242.12 × 242.12
  4. Step 4: Simplify right side
    157.73x = 58,622.62
  5. Step 5: Solve for x
    x = 58,622.62/157.73
  6. Step 6: Final answer
    x = 371.65

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.