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Finding the Fourth Proportional to 323.16, 445.88 and 192.20

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Solution

The fourth proportional to 323.16, 445.88 and 192.20 is: 265.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.16 : 445.88 = 192.20 : x
  2. Step 2: Convert to fraction form
    323.16/445.88 = 192.20/x
  3. Step 3: Cross multiply
    323.16x = 445.88 × 192.20
  4. Step 4: Simplify right side
    323.16x = 85,698.14
  5. Step 5: Solve for x
    x = 85,698.14/323.16
  6. Step 6: Final answer
    x = 265.19

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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.