Home / 1,378.19-2,067.32-404.33

Finding the Fourth Proportional to 1,378.19, 2,067.32 and 404.33

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Solution

The fourth proportional to 1,378.19, 2,067.32 and 404.33 is: 606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.19 : 2,067.32 = 404.33 : x
  2. Step 2: Convert to fraction form
    1,378.19/2,067.32 = 404.33/x
  3. Step 3: Cross multiply
    1,378.19x = 2,067.32 × 404.33
  4. Step 4: Simplify right side
    1,378.19x = 835,870.17
  5. Step 5: Solve for x
    x = 835,870.17/1,378.19
  6. Step 6: Final answer
    x = 606.50

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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.