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Finding the Third Proportional to 817.50 and 1,237.88

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Solution

The third proportional to 817.50 and 1,237.88 is: 1,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.50 : 1,237.88 = 1,237.88 : x
  2. Step 2: Convert to fraction form
    817.50/1,237.88 = 1,237.88/x
  3. Step 3: Cross multiply
    817.50x = 1,237.88 × 1,237.88
  4. Step 4: Simplify right side
    817.50x = 1,532,334.52
  5. Step 5: Solve for x
    x = 1,532,334.52/817.50
  6. Step 6: Final answer
    x = 1,874.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.