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Finding the Third Proportional to 377.50 and 425.50

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Solution

The third proportional to 377.50 and 425.50 is: 479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.50 : 425.50 = 425.50 : x
  2. Step 2: Convert to fraction form
    377.50/425.50 = 425.50/x
  3. Step 3: Cross multiply
    377.50x = 425.50 × 425.50
  4. Step 4: Simplify right side
    377.50x = 181,050.25
  5. Step 5: Solve for x
    x = 181,050.25/377.50
  6. Step 6: Final answer
    x = 479.60

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These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.