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Finding the Fourth Proportional to 1,481.04, 2,218.32 and 749.04

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Solution

The fourth proportional to 1,481.04, 2,218.32 and 749.04 is: 1,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.04 : 2,218.32 = 749.04 : x
  2. Step 2: Convert to fraction form
    1,481.04/2,218.32 = 749.04/x
  3. Step 3: Cross multiply
    1,481.04x = 2,218.32 × 749.04
  4. Step 4: Simplify right side
    1,481.04x = 1,661,610.41
  5. Step 5: Solve for x
    x = 1,661,610.41/1,481.04
  6. Step 6: Final answer
    x = 1,121.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.