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Finding the Fourth Proportional to 572.80, 791.96 and 523.60

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Solution

The fourth proportional to 572.80, 791.96 and 523.60 is: 723.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.80 : 791.96 = 523.60 : x
  2. Step 2: Convert to fraction form
    572.80/791.96 = 523.60/x
  3. Step 3: Cross multiply
    572.80x = 791.96 × 523.60
  4. Step 4: Simplify right side
    572.80x = 414,670.26
  5. Step 5: Solve for x
    x = 414,670.26/572.80
  6. Step 6: Final answer
    x = 723.94

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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.