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Finding the Third Proportional to 161.60 and 223.07

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Solution

The third proportional to 161.60 and 223.07 is: 307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.60 : 223.07 = 223.07 : x
  2. Step 2: Convert to fraction form
    161.60/223.07 = 223.07/x
  3. Step 3: Cross multiply
    161.60x = 223.07 × 223.07
  4. Step 4: Simplify right side
    161.60x = 49,758.62
  5. Step 5: Solve for x
    x = 49,758.62/161.60
  6. Step 6: Final answer
    x = 307.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.