Home / 1,086.23-1,629.54-355.85

Finding the Fourth Proportional to 1,086.23, 1,629.54 and 355.85

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Solution

The fourth proportional to 1,086.23, 1,629.54 and 355.85 is: 533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.23 : 1,629.54 = 355.85 : x
  2. Step 2: Convert to fraction form
    1,086.23/1,629.54 = 355.85/x
  3. Step 3: Cross multiply
    1,086.23x = 1,629.54 × 355.85
  4. Step 4: Simplify right side
    1,086.23x = 579,863.66
  5. Step 5: Solve for x
    x = 579,863.66/1,086.23
  6. Step 6: Final answer
    x = 533.83

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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.