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Finding the Fourth Proportional to 573.67, 791.91 and 387.10

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Solution

The fourth proportional to 573.67, 791.91 and 387.10 is: 534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.67 : 791.91 = 387.10 : x
  2. Step 2: Convert to fraction form
    573.67/791.91 = 387.10/x
  3. Step 3: Cross multiply
    573.67x = 791.91 × 387.10
  4. Step 4: Simplify right side
    573.67x = 306,548.36
  5. Step 5: Solve for x
    x = 306,548.36/573.67
  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.