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Finding the Third Proportional to 167.63 and 268.31

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Solution

The third proportional to 167.63 and 268.31 is: 429.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.63 : 268.31 = 268.31 : x
  2. Step 2: Convert to fraction form
    167.63/268.31 = 268.31/x
  3. Step 3: Cross multiply
    167.63x = 268.31 × 268.31
  4. Step 4: Simplify right side
    167.63x = 71,991.60
  5. Step 5: Solve for x
    x = 71,991.60/167.63
  6. Step 6: Final answer
    x = 429.48

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.