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Finding the Third Proportional to 250 and 395.50

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Solution

The third proportional to 250 and 395.50 is: 625.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    250 : 395.50 = 395.50 : x
  2. Step 2: Convert to fraction form
    250/395.50 = 395.50/x
  3. Step 3: Cross multiply
    250x = 395.50 × 395.50
  4. Step 4: Simplify right side
    250x = 156,420.25
  5. Step 5: Solve for x
    x = 156,420.25/250
  6. Step 6: Final answer
    x = 625.68

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These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.