Home / 1,028.52-1,541.82-378.75

Finding the Fourth Proportional to 1,028.52, 1,541.82 and 378.75

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Solution

The fourth proportional to 1,028.52, 1,541.82 and 378.75 is: 567.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.52 : 1,541.82 = 378.75 : x
  2. Step 2: Convert to fraction form
    1,028.52/1,541.82 = 378.75/x
  3. Step 3: Cross multiply
    1,028.52x = 1,541.82 × 378.75
  4. Step 4: Simplify right side
    1,028.52x = 583,964.33
  5. Step 5: Solve for x
    x = 583,964.33/1,028.52
  6. Step 6: Final answer
    x = 567.77

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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.