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Finding the Third Proportional to 511.50 and 588.38

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Solution

The third proportional to 511.50 and 588.38 is: 676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.50 : 588.38 = 588.38 : x
  2. Step 2: Convert to fraction form
    511.50/588.38 = 588.38/x
  3. Step 3: Cross multiply
    511.50x = 588.38 × 588.38
  4. Step 4: Simplify right side
    511.50x = 346,185.14
  5. Step 5: Solve for x
    x = 346,185.14/511.50
  6. Step 6: Final answer
    x = 676.80

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.