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Finding the Third Proportional to 628.59 and 1,381.08

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Solution

The third proportional to 628.59 and 1,381.08 is: 3,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.59 : 1,381.08 = 1,381.08 : x
  2. Step 2: Convert to fraction form
    628.59/1,381.08 = 1,381.08/x
  3. Step 3: Cross multiply
    628.59x = 1,381.08 × 1,381.08
  4. Step 4: Simplify right side
    628.59x = 1,907,376.79
  5. Step 5: Solve for x
    x = 1,907,376.79/628.59
  6. Step 6: Final answer
    x = 3,034.36

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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.