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Finding the Third Proportional to 165.87 and 243.98

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Solution

The third proportional to 165.87 and 243.98 is: 358.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.87 : 243.98 = 243.98 : x
  2. Step 2: Convert to fraction form
    165.87/243.98 = 243.98/x
  3. Step 3: Cross multiply
    165.87x = 243.98 × 243.98
  4. Step 4: Simplify right side
    165.87x = 59,528.38
  5. Step 5: Solve for x
    x = 59,528.38/165.87
  6. Step 6: Final answer
    x = 358.89

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.