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Finding the Third Proportional to 67.08 and 143.65

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Solution

The third proportional to 67.08 and 143.65 is: 307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.08 : 143.65 = 143.65 : x
  2. Step 2: Convert to fraction form
    67.08/143.65 = 143.65/x
  3. Step 3: Cross multiply
    67.08x = 143.65 × 143.65
  4. Step 4: Simplify right side
    67.08x = 20,634.87
  5. Step 5: Solve for x
    x = 20,634.87/67.08
  6. Step 6: Final answer
    x = 307.62

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.