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Finding the Fourth Proportional to 438.74, 605.44 and 272.96

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Solution

The fourth proportional to 438.74, 605.44 and 272.96 is: 376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.74 : 605.44 = 272.96 : x
  2. Step 2: Convert to fraction form
    438.74/605.44 = 272.96/x
  3. Step 3: Cross multiply
    438.74x = 605.44 × 272.96
  4. Step 4: Simplify right side
    438.74x = 165,260.90
  5. Step 5: Solve for x
    x = 165,260.90/438.74
  6. Step 6: Final answer
    x = 376.67

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