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Finding the Third Proportional to 262 and 408.50

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Solution

The third proportional to 262 and 408.50 is: 636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    262 : 408.50 = 408.50 : x
  2. Step 2: Convert to fraction form
    262/408.50 = 408.50/x
  3. Step 3: Cross multiply
    262x = 408.50 × 408.50
  4. Step 4: Simplify right side
    262x = 166,872.25
  5. Step 5: Solve for x
    x = 166,872.25/262
  6. Step 6: Final answer
    x = 636.92

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These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.