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Finding the Third Proportional to 306.50 and 673.75

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Solution

The third proportional to 306.50 and 673.75 is: 1,481.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.50 : 673.75 = 673.75 : x
  2. Step 2: Convert to fraction form
    306.50/673.75 = 673.75/x
  3. Step 3: Cross multiply
    306.50x = 673.75 × 673.75
  4. Step 4: Simplify right side
    306.50x = 453,939.06
  5. Step 5: Solve for x
    x = 453,939.06/306.50
  6. Step 6: Final answer
    x = 1,481.04

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.