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Finding the Third Proportional to 692.50 and 1,707.25

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Solution

The third proportional to 692.50 and 1,707.25 is: 4,208.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.50 : 1,707.25 = 1,707.25 : x
  2. Step 2: Convert to fraction form
    692.50/1,707.25 = 1,707.25/x
  3. Step 3: Cross multiply
    692.50x = 1,707.25 × 1,707.25
  4. Step 4: Simplify right side
    692.50x = 2,914,702.56
  5. Step 5: Solve for x
    x = 2,914,702.56/692.50
  6. Step 6: Final answer
    x = 4,208.96

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.