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Finding the Fourth Proportional to 573.43, 791.27 and 321.37

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Solution

The fourth proportional to 573.43, 791.27 and 321.37 is: 443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.43 : 791.27 = 321.37 : x
  2. Step 2: Convert to fraction form
    573.43/791.27 = 321.37/x
  3. Step 3: Cross multiply
    573.43x = 791.27 × 321.37
  4. Step 4: Simplify right side
    573.43x = 254,289.82
  5. Step 5: Solve for x
    x = 254,289.82/573.43
  6. Step 6: Final answer
    x = 443.45

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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.