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Finding the Fourth Proportional to 1,194.15, 1,791.11 and 328.41

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Solution

The fourth proportional to 1,194.15, 1,791.11 and 328.41 is: 492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.15 : 1,791.11 = 328.41 : x
  2. Step 2: Convert to fraction form
    1,194.15/1,791.11 = 328.41/x
  3. Step 3: Cross multiply
    1,194.15x = 1,791.11 × 328.41
  4. Step 4: Simplify right side
    1,194.15x = 588,216.79
  5. Step 5: Solve for x
    x = 588,216.79/1,194.15
  6. Step 6: Final answer
    x = 492.58

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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.