Home / 1,370.39-2,055.28-396.28

Finding the Fourth Proportional to 1,370.39, 2,055.28 and 396.28

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Solution

The fourth proportional to 1,370.39, 2,055.28 and 396.28 is: 594.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.39 : 2,055.28 = 396.28 : x
  2. Step 2: Convert to fraction form
    1,370.39/2,055.28 = 396.28/x
  3. Step 3: Cross multiply
    1,370.39x = 2,055.28 × 396.28
  4. Step 4: Simplify right side
    1,370.39x = 814,455.09
  5. Step 5: Solve for x
    x = 814,455.09/1,370.39
  6. Step 6: Final answer
    x = 594.33

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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.