Home / 1,086.26-1,629.72-393.26

Finding the Fourth Proportional to 1,086.26, 1,629.72 and 393.26

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Solution

The fourth proportional to 1,086.26, 1,629.72 and 393.26 is: 590.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.26 : 1,629.72 = 393.26 : x
  2. Step 2: Convert to fraction form
    1,086.26/1,629.72 = 393.26/x
  3. Step 3: Cross multiply
    1,086.26x = 1,629.72 × 393.26
  4. Step 4: Simplify right side
    1,086.26x = 640,895.54
  5. Step 5: Solve for x
    x = 640,895.54/1,086.26
  6. Step 6: Final answer
    x = 590.00

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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.