Home / 1,378.22-2,067.46-512.33

Finding the Fourth Proportional to 1,378.22, 2,067.46 and 512.33

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Solution

The fourth proportional to 1,378.22, 2,067.46 and 512.33 is: 768.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.22 : 2,067.46 = 512.33 : x
  2. Step 2: Convert to fraction form
    1,378.22/2,067.46 = 512.33/x
  3. Step 3: Cross multiply
    1,378.22x = 2,067.46 × 512.33
  4. Step 4: Simplify right side
    1,378.22x = 1,059,210.16
  5. Step 5: Solve for x
    x = 1,059,210.16/1,378.22
  6. Step 6: Final answer
    x = 768.54

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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.