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Finding the Fourth Proportional to 627.32, 940.85 and 395.90

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Solution

The fourth proportional to 627.32, 940.85 and 395.90 is: 593.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.32 : 940.85 = 395.90 : x
  2. Step 2: Convert to fraction form
    627.32/940.85 = 395.90/x
  3. Step 3: Cross multiply
    627.32x = 940.85 × 395.90
  4. Step 4: Simplify right side
    627.32x = 372,479.36
  5. Step 5: Solve for x
    x = 372,479.36/627.32
  6. Step 6: Final answer
    x = 593.76

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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.