Home / 1,200.27-1,799.95-550.55

Finding the Fourth Proportional to 1,200.27, 1,799.95 and 550.55

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Solution

The fourth proportional to 1,200.27, 1,799.95 and 550.55 is: 825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.27 : 1,799.95 = 550.55 : x
  2. Step 2: Convert to fraction form
    1,200.27/1,799.95 = 550.55/x
  3. Step 3: Cross multiply
    1,200.27x = 1,799.95 × 550.55
  4. Step 4: Simplify right side
    1,200.27x = 990,954.96
  5. Step 5: Solve for x
    x = 990,954.96/1,200.27
  6. Step 6: Final answer
    x = 825.61

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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.