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Finding the Third Proportional to 181.13 and 422.58

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Solution

The third proportional to 181.13 and 422.58 is: 985.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.13 : 422.58 = 422.58 : x
  2. Step 2: Convert to fraction form
    181.13/422.58 = 422.58/x
  3. Step 3: Cross multiply
    181.13x = 422.58 × 422.58
  4. Step 4: Simplify right side
    181.13x = 178,572.27
  5. Step 5: Solve for x
    x = 178,572.27/181.13
  6. Step 6: Final answer
    x = 985.91

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.