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Finding the Fourth Proportional to 571.80, 788.37 and 394.44

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Solution

The fourth proportional to 571.80, 788.37 and 394.44 is: 543.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.80 : 788.37 = 394.44 : x
  2. Step 2: Convert to fraction form
    571.80/788.37 = 394.44/x
  3. Step 3: Cross multiply
    571.80x = 788.37 × 394.44
  4. Step 4: Simplify right side
    571.80x = 310,964.66
  5. Step 5: Solve for x
    x = 310,964.66/571.80
  6. Step 6: Final answer
    x = 543.83

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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.