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Finding the Third Proportional to 481 and 1,230.50

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Solution

The third proportional to 481 and 1,230.50 is: 3,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    481 : 1,230.50 = 1,230.50 : x
  2. Step 2: Convert to fraction form
    481/1,230.50 = 1,230.50/x
  3. Step 3: Cross multiply
    481x = 1,230.50 × 1,230.50
  4. Step 4: Simplify right side
    481x = 1,514,130.25
  5. Step 5: Solve for x
    x = 1,514,130.25/481
  6. Step 6: Final answer
    x = 3,147.88

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.