Home / 1,086.08-1,628.92-355.56

Finding the Fourth Proportional to 1,086.08, 1,628.92 and 355.56

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Solution

The fourth proportional to 1,086.08, 1,628.92 and 355.56 is: 533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.08 : 1,628.92 = 355.56 : x
  2. Step 2: Convert to fraction form
    1,086.08/1,628.92 = 355.56/x
  3. Step 3: Cross multiply
    1,086.08x = 1,628.92 × 355.56
  4. Step 4: Simplify right side
    1,086.08x = 579,178.80
  5. Step 5: Solve for x
    x = 579,178.80/1,086.08
  6. Step 6: Final answer
    x = 533.27

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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.