Home / 1,198.16-1,653.61-674.29

Finding the Fourth Proportional to 1,198.16, 1,653.61 and 674.29

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Solution

The fourth proportional to 1,198.16, 1,653.61 and 674.29 is: 930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.16 : 1,653.61 = 674.29 : x
  2. Step 2: Convert to fraction form
    1,198.16/1,653.61 = 674.29/x
  3. Step 3: Cross multiply
    1,198.16x = 1,653.61 × 674.29
  4. Step 4: Simplify right side
    1,198.16x = 1,115,012.69
  5. Step 5: Solve for x
    x = 1,115,012.69/1,198.16
  6. Step 6: Final answer
    x = 930.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.