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Finding the Fourth Proportional to 639.19, 882.05 and 377.16

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Solution

The fourth proportional to 639.19, 882.05 and 377.16 is: 520.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.19 : 882.05 = 377.16 : x
  2. Step 2: Convert to fraction form
    639.19/882.05 = 377.16/x
  3. Step 3: Cross multiply
    639.19x = 882.05 × 377.16
  4. Step 4: Simplify right side
    639.19x = 332,673.98
  5. Step 5: Solve for x
    x = 332,673.98/639.19
  6. Step 6: Final answer
    x = 520.46

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