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Finding the Fourth Proportional to 627.19, 940.61 and 395.74

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Solution

The fourth proportional to 627.19, 940.61 and 395.74 is: 593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.19 : 940.61 = 395.74 : x
  2. Step 2: Convert to fraction form
    627.19/940.61 = 395.74/x
  3. Step 3: Cross multiply
    627.19x = 940.61 × 395.74
  4. Step 4: Simplify right side
    627.19x = 372,233.88
  5. Step 5: Solve for x
    x = 372,233.88/627.19
  6. Step 6: Final answer
    x = 593.49

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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.