Home / 1,112.18-1,668.33-290.48

Finding the Fourth Proportional to 1,112.18, 1,668.33 and 290.48

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Solution

The fourth proportional to 1,112.18, 1,668.33 and 290.48 is: 435.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.18 : 1,668.33 = 290.48 : x
  2. Step 2: Convert to fraction form
    1,112.18/1,668.33 = 290.48/x
  3. Step 3: Cross multiply
    1,112.18x = 1,668.33 × 290.48
  4. Step 4: Simplify right side
    1,112.18x = 484,608.16
  5. Step 5: Solve for x
    x = 484,608.16/1,112.18
  6. Step 6: Final answer
    x = 435.73

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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.