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Finding the Fourth Proportional to 573.75, 791.97 and 387.12

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Solution

The fourth proportional to 573.75, 791.97 and 387.12 is: 534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.75 : 791.97 = 387.12 : x
  2. Step 2: Convert to fraction form
    573.75/791.97 = 387.12/x
  3. Step 3: Cross multiply
    573.75x = 791.97 × 387.12
  4. Step 4: Simplify right side
    573.75x = 306,587.43
  5. Step 5: Solve for x
    x = 306,587.43/573.75
  6. Step 6: Final answer
    x = 534.36

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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.