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Finding the Third Proportional to 451.75 and 692.38

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Solution

The third proportional to 451.75 and 692.38 is: 1,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.75 : 692.38 = 692.38 : x
  2. Step 2: Convert to fraction form
    451.75/692.38 = 692.38/x
  3. Step 3: Cross multiply
    451.75x = 692.38 × 692.38
  4. Step 4: Simplify right side
    451.75x = 479,383.14
  5. Step 5: Solve for x
    x = 479,383.14/451.75
  6. Step 6: Final answer
    x = 1,061.17

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These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.