Home / 1,086.85-1,629.01-539.38

Finding the Fourth Proportional to 1,086.85, 1,629.01 and 539.38

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Solution

The fourth proportional to 1,086.85, 1,629.01 and 539.38 is: 808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.85 : 1,629.01 = 539.38 : x
  2. Step 2: Convert to fraction form
    1,086.85/1,629.01 = 539.38/x
  3. Step 3: Cross multiply
    1,086.85x = 1,629.01 × 539.38
  4. Step 4: Simplify right side
    1,086.85x = 878,655.41
  5. Step 5: Solve for x
    x = 878,655.41/1,086.85
  6. Step 6: Final answer
    x = 808.44

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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.