Home / 1,081.38-1,621.92-301.44

Finding the Fourth Proportional to 1,081.38, 1,621.92 and 301.44

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Solution

The fourth proportional to 1,081.38, 1,621.92 and 301.44 is: 452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.38 : 1,621.92 = 301.44 : x
  2. Step 2: Convert to fraction form
    1,081.38/1,621.92 = 301.44/x
  3. Step 3: Cross multiply
    1,081.38x = 1,621.92 × 301.44
  4. Step 4: Simplify right side
    1,081.38x = 488,911.56
  5. Step 5: Solve for x
    x = 488,911.56/1,081.38
  6. Step 6: Final answer
    x = 452.12

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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.