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Finding the Fourth Proportional to 323.73, 485.64 and 107.46

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Solution

The fourth proportional to 323.73, 485.64 and 107.46 is: 161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.73 : 485.64 = 107.46 : x
  2. Step 2: Convert to fraction form
    323.73/485.64 = 107.46/x
  3. Step 3: Cross multiply
    323.73x = 485.64 × 107.46
  4. Step 4: Simplify right side
    323.73x = 52,186.87
  5. Step 5: Solve for x
    x = 52,186.87/323.73
  6. Step 6: Final answer
    x = 161.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.