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Finding the Fourth Proportional to 396.60, 594.90 and 274.74

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Solution

The fourth proportional to 396.60, 594.90 and 274.74 is: 412.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.60 : 594.90 = 274.74 : x
  2. Step 2: Convert to fraction form
    396.60/594.90 = 274.74/x
  3. Step 3: Cross multiply
    396.60x = 594.90 × 274.74
  4. Step 4: Simplify right side
    396.60x = 163,442.83
  5. Step 5: Solve for x
    x = 163,442.83/396.60
  6. Step 6: Final answer
    x = 412.11

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