Home / 1,212.68-1,819.26-443.24

Finding the Fourth Proportional to 1,212.68, 1,819.26 and 443.24

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Solution

The fourth proportional to 1,212.68, 1,819.26 and 443.24 is: 664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.68 : 1,819.26 = 443.24 : x
  2. Step 2: Convert to fraction form
    1,212.68/1,819.26 = 443.24/x
  3. Step 3: Cross multiply
    1,212.68x = 1,819.26 × 443.24
  4. Step 4: Simplify right side
    1,212.68x = 806,368.80
  5. Step 5: Solve for x
    x = 806,368.80/1,212.68
  6. Step 6: Final answer
    x = 664.95

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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.