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Finding the Fourth Proportional to 573.62, 791.33 and 387.23

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Solution

The fourth proportional to 573.62, 791.33 and 387.23 is: 534.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.62 : 791.33 = 387.23 : x
  2. Step 2: Convert to fraction form
    573.62/791.33 = 387.23/x
  3. Step 3: Cross multiply
    573.62x = 791.33 × 387.23
  4. Step 4: Simplify right side
    573.62x = 306,420.82
  5. Step 5: Solve for x
    x = 306,420.82/573.62
  6. Step 6: Final answer
    x = 534.19

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.