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Finding the Third Proportional to 480.75 and 1,069.50

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Solution

The third proportional to 480.75 and 1,069.50 is: 2,379.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.75 : 1,069.50 = 1,069.50 : x
  2. Step 2: Convert to fraction form
    480.75/1,069.50 = 1,069.50/x
  3. Step 3: Cross multiply
    480.75x = 1,069.50 × 1,069.50
  4. Step 4: Simplify right side
    480.75x = 1,143,830.25
  5. Step 5: Solve for x
    x = 1,143,830.25/480.75
  6. Step 6: Final answer
    x = 2,379.26

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.