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Finding the Fourth Proportional to 627.44, 940.46 and 261.98

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Solution

The fourth proportional to 627.44, 940.46 and 261.98 is: 392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.44 : 940.46 = 261.98 : x
  2. Step 2: Convert to fraction form
    627.44/940.46 = 261.98/x
  3. Step 3: Cross multiply
    627.44x = 940.46 × 261.98
  4. Step 4: Simplify right side
    627.44x = 246,381.71
  5. Step 5: Solve for x
    x = 246,381.71/627.44
  6. Step 6: Final answer
    x = 392.68

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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.