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Finding the Fourth Proportional to 589.38, 813.44 and 573.78

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Solution

The fourth proportional to 589.38, 813.44 and 573.78 is: 791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.38 : 813.44 = 573.78 : x
  2. Step 2: Convert to fraction form
    589.38/813.44 = 573.78/x
  3. Step 3: Cross multiply
    589.38x = 813.44 × 573.78
  4. Step 4: Simplify right side
    589.38x = 466,735.60
  5. Step 5: Solve for x
    x = 466,735.60/589.38
  6. Step 6: Final answer
    x = 791.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.