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Finding the Third Proportional to 322.73 and 670.36

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Solution

The third proportional to 322.73 and 670.36 is: 1,392.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.73 : 670.36 = 670.36 : x
  2. Step 2: Convert to fraction form
    322.73/670.36 = 670.36/x
  3. Step 3: Cross multiply
    322.73x = 670.36 × 670.36
  4. Step 4: Simplify right side
    322.73x = 449,381.69
  5. Step 5: Solve for x
    x = 449,381.69/322.73
  6. Step 6: Final answer
    x = 1,392.42

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.