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Finding the Third Proportional to 301.50 and 631.97

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Solution

The third proportional to 301.50 and 631.97 is: 1,324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.50 : 631.97 = 631.97 : x
  2. Step 2: Convert to fraction form
    301.50/631.97 = 631.97/x
  3. Step 3: Cross multiply
    301.50x = 631.97 × 631.97
  4. Step 4: Simplify right side
    301.50x = 399,384.50
  5. Step 5: Solve for x
    x = 399,384.50/301.50
  6. Step 6: Final answer
    x = 1,324.66

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.