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Finding the Third Proportional to 221.25 and 480.50

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Solution

The third proportional to 221.25 and 480.50 is: 1,043.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.25 : 480.50 = 480.50 : x
  2. Step 2: Convert to fraction form
    221.25/480.50 = 480.50/x
  3. Step 3: Cross multiply
    221.25x = 480.50 × 480.50
  4. Step 4: Simplify right side
    221.25x = 230,880.25
  5. Step 5: Solve for x
    x = 230,880.25/221.25
  6. Step 6: Final answer
    x = 1,043.53

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.