Home / 1,080.25-1,618.85-531.88

Finding the Fourth Proportional to 1,080.25, 1,618.85 and 531.88

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Solution

The fourth proportional to 1,080.25, 1,618.85 and 531.88 is: 797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.25 : 1,618.85 = 531.88 : x
  2. Step 2: Convert to fraction form
    1,080.25/1,618.85 = 531.88/x
  3. Step 3: Cross multiply
    1,080.25x = 1,618.85 × 531.88
  4. Step 4: Simplify right side
    1,080.25x = 861,031.22
  5. Step 5: Solve for x
    x = 861,031.22/1,080.25
  6. Step 6: Final answer
    x = 797.07

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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.