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Finding the Fourth Proportional to 571.56, 791.92 and 559.26

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Solution

The fourth proportional to 571.56, 791.92 and 559.26 is: 774.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.56 : 791.92 = 559.26 : x
  2. Step 2: Convert to fraction form
    571.56/791.92 = 559.26/x
  3. Step 3: Cross multiply
    571.56x = 791.92 × 559.26
  4. Step 4: Simplify right side
    571.56x = 442,889.18
  5. Step 5: Solve for x
    x = 442,889.18/571.56
  6. Step 6: Final answer
    x = 774.88

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.