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Finding the Third Proportional to 461.50 and 692.75

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Solution

The third proportional to 461.50 and 692.75 is: 1,039.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.50 : 692.75 = 692.75 : x
  2. Step 2: Convert to fraction form
    461.50/692.75 = 692.75/x
  3. Step 3: Cross multiply
    461.50x = 692.75 × 692.75
  4. Step 4: Simplify right side
    461.50x = 479,902.56
  5. Step 5: Solve for x
    x = 479,902.56/461.50
  6. Step 6: Final answer
    x = 1,039.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.