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Finding the Third Proportional to 331.41 and 722.34

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Solution

The third proportional to 331.41 and 722.34 is: 1,574.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.41 : 722.34 = 722.34 : x
  2. Step 2: Convert to fraction form
    331.41/722.34 = 722.34/x
  3. Step 3: Cross multiply
    331.41x = 722.34 × 722.34
  4. Step 4: Simplify right side
    331.41x = 521,780.49
  5. Step 5: Solve for x
    x = 521,780.49/331.41
  6. Step 6: Final answer
    x = 1,574.44

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.