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Finding the Fourth Proportional to 627.25, 940.62 and 261.79

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Solution

The fourth proportional to 627.25, 940.62 and 261.79 is: 392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.25 : 940.62 = 261.79 : x
  2. Step 2: Convert to fraction form
    627.25/940.62 = 261.79/x
  3. Step 3: Cross multiply
    627.25x = 940.62 × 261.79
  4. Step 4: Simplify right side
    627.25x = 246,244.91
  5. Step 5: Solve for x
    x = 246,244.91/627.25
  6. Step 6: Final answer
    x = 392.58

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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.