Home / 1,079.27-1,618.61-299.09

Finding the Fourth Proportional to 1,079.27, 1,618.61 and 299.09

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Solution

The fourth proportional to 1,079.27, 1,618.61 and 299.09 is: 448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.27 : 1,618.61 = 299.09 : x
  2. Step 2: Convert to fraction form
    1,079.27/1,618.61 = 299.09/x
  3. Step 3: Cross multiply
    1,079.27x = 1,618.61 × 299.09
  4. Step 4: Simplify right side
    1,079.27x = 484,110.06
  5. Step 5: Solve for x
    x = 484,110.06/1,079.27
  6. Step 6: Final answer
    x = 448.55

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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.