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Finding the Fourth Proportional to 551.97, 828 and 227.16

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Solution

The fourth proportional to 551.97, 828 and 227.16 is: 340.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.97 : 828 = 227.16 : x
  2. Step 2: Convert to fraction form
    551.97/828 = 227.16/x
  3. Step 3: Cross multiply
    551.97x = 828 × 227.16
  4. Step 4: Simplify right side
    551.97x = 188,088.48
  5. Step 5: Solve for x
    x = 188,088.48/551.97
  6. Step 6: Final answer
    x = 340.76

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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.