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Finding the Third Proportional to 518.50 and 1,237

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Solution

The third proportional to 518.50 and 1,237 is: 2,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.50 : 1,237 = 1,237 : x
  2. Step 2: Convert to fraction form
    518.50/1,237 = 1,237/x
  3. Step 3: Cross multiply
    518.50x = 1,237 × 1,237
  4. Step 4: Simplify right side
    518.50x = 1,530,169
  5. Step 5: Solve for x
    x = 1,530,169/518.50
  6. Step 6: Final answer
    x = 2,951.15

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.