Home / 1,028.18-1,541.25-378.74

Finding the Fourth Proportional to 1,028.18, 1,541.25 and 378.74

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Solution

The fourth proportional to 1,028.18, 1,541.25 and 378.74 is: 567.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.18 : 1,541.25 = 378.74 : x
  2. Step 2: Convert to fraction form
    1,028.18/1,541.25 = 378.74/x
  3. Step 3: Cross multiply
    1,028.18x = 1,541.25 × 378.74
  4. Step 4: Simplify right side
    1,028.18x = 583,733.03
  5. Step 5: Solve for x
    x = 583,733.03/1,028.18
  6. Step 6: Final answer
    x = 567.73

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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.