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Finding the Fourth Proportional to 573.41, 791.07 and 405.60

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Solution

The fourth proportional to 573.41, 791.07 and 405.60 is: 559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.41 : 791.07 = 405.60 : x
  2. Step 2: Convert to fraction form
    573.41/791.07 = 405.60/x
  3. Step 3: Cross multiply
    573.41x = 791.07 × 405.60
  4. Step 4: Simplify right side
    573.41x = 320,857.99
  5. Step 5: Solve for x
    x = 320,857.99/573.41
  6. Step 6: Final answer
    x = 559.57

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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.