Home / 1,080.38-1,621.01-495.66

Finding the Fourth Proportional to 1,080.38, 1,621.01 and 495.66

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Solution

The fourth proportional to 1,080.38, 1,621.01 and 495.66 is: 743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.38 : 1,621.01 = 495.66 : x
  2. Step 2: Convert to fraction form
    1,080.38/1,621.01 = 495.66/x
  3. Step 3: Cross multiply
    1,080.38x = 1,621.01 × 495.66
  4. Step 4: Simplify right side
    1,080.38x = 803,469.82
  5. Step 5: Solve for x
    x = 803,469.82/1,080.38
  6. Step 6: Final answer
    x = 743.69

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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.