Home / 1,370.28-2,055.75-396.43

Finding the Fourth Proportional to 1,370.28, 2,055.75 and 396.43

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Solution

The fourth proportional to 1,370.28, 2,055.75 and 396.43 is: 594.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.28 : 2,055.75 = 396.43 : x
  2. Step 2: Convert to fraction form
    1,370.28/2,055.75 = 396.43/x
  3. Step 3: Cross multiply
    1,370.28x = 2,055.75 × 396.43
  4. Step 4: Simplify right side
    1,370.28x = 814,960.97
  5. Step 5: Solve for x
    x = 814,960.97/1,370.28
  6. Step 6: Final answer
    x = 594.74

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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.