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Finding the Fourth Proportional to 573.92, 791.52 and 387.36

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Solution

The fourth proportional to 573.92, 791.52 and 387.36 is: 534.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.92 : 791.52 = 387.36 : x
  2. Step 2: Convert to fraction form
    573.92/791.52 = 387.36/x
  3. Step 3: Cross multiply
    573.92x = 791.52 × 387.36
  4. Step 4: Simplify right side
    573.92x = 306,603.19
  5. Step 5: Solve for x
    x = 306,603.19/573.92
  6. Step 6: Final answer
    x = 534.23

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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.