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Finding the Fourth Proportional to 451.36, 622.92 and 276.88

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Solution

The fourth proportional to 451.36, 622.92 and 276.88 is: 382.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.36 : 622.92 = 276.88 : x
  2. Step 2: Convert to fraction form
    451.36/622.92 = 276.88/x
  3. Step 3: Cross multiply
    451.36x = 622.92 × 276.88
  4. Step 4: Simplify right side
    451.36x = 172,474.09
  5. Step 5: Solve for x
    x = 172,474.09/451.36
  6. Step 6: Final answer
    x = 382.12

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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.