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Finding the Fourth Proportional to 323.41, 446.93 and 287.41

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Solution

The fourth proportional to 323.41, 446.93 and 287.41 is: 397.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.41 : 446.93 = 287.41 : x
  2. Step 2: Convert to fraction form
    323.41/446.93 = 287.41/x
  3. Step 3: Cross multiply
    323.41x = 446.93 × 287.41
  4. Step 4: Simplify right side
    323.41x = 128,450.64
  5. Step 5: Solve for x
    x = 128,450.64/323.41
  6. Step 6: Final answer
    x = 397.18

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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.