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Finding the Fourth Proportional to 323.51, 444.02 and 287.73

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Solution

The fourth proportional to 323.51, 444.02 and 287.73 is: 394.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.51 : 444.02 = 287.73 : x
  2. Step 2: Convert to fraction form
    323.51/444.02 = 287.73/x
  3. Step 3: Cross multiply
    323.51x = 444.02 × 287.73
  4. Step 4: Simplify right side
    323.51x = 127,756.44
  5. Step 5: Solve for x
    x = 127,756.44/323.51
  6. Step 6: Final answer
    x = 394.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.