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Finding the Third Proportional to 833.50 and 1,487

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Solution

The third proportional to 833.50 and 1,487 is: 2,652.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.50 : 1,487 = 1,487 : x
  2. Step 2: Convert to fraction form
    833.50/1,487 = 1,487/x
  3. Step 3: Cross multiply
    833.50x = 1,487 × 1,487
  4. Step 4: Simplify right side
    833.50x = 2,211,169
  5. Step 5: Solve for x
    x = 2,211,169/833.50
  6. Step 6: Final answer
    x = 2,652.87

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.