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Finding the Fourth Proportional to 574.94, 863.45 and 551.74

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Solution

The fourth proportional to 574.94, 863.45 and 551.74 is: 828.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.94 : 863.45 = 551.74 : x
  2. Step 2: Convert to fraction form
    574.94/863.45 = 551.74/x
  3. Step 3: Cross multiply
    574.94x = 863.45 × 551.74
  4. Step 4: Simplify right side
    574.94x = 476,399.90
  5. Step 5: Solve for x
    x = 476,399.90/574.94
  6. Step 6: Final answer
    x = 828.61

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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.