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Finding the Third Proportional to 297.84 and 628.59

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Solution

The third proportional to 297.84 and 628.59 is: 1,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.84 : 628.59 = 628.59 : x
  2. Step 2: Convert to fraction form
    297.84/628.59 = 628.59/x
  3. Step 3: Cross multiply
    297.84x = 628.59 × 628.59
  4. Step 4: Simplify right side
    297.84x = 395,130.10
  5. Step 5: Solve for x
    x = 395,130.10/297.84
  6. Step 6: Final answer
    x = 1,326.64

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.