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Finding the Fourth Proportional to 573.39, 791.31 and 324.72

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Solution

The fourth proportional to 573.39, 791.31 and 324.72 is: 448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.39 : 791.31 = 324.72 : x
  2. Step 2: Convert to fraction form
    573.39/791.31 = 324.72/x
  3. Step 3: Cross multiply
    573.39x = 791.31 × 324.72
  4. Step 4: Simplify right side
    573.39x = 256,954.18
  5. Step 5: Solve for x
    x = 256,954.18/573.39
  6. Step 6: Final answer
    x = 448.13

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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.