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Finding the Fourth Proportional to 639.39, 959.09 and 350.67

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Solution

The fourth proportional to 639.39, 959.09 and 350.67 is: 526.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.39 : 959.09 = 350.67 : x
  2. Step 2: Convert to fraction form
    639.39/959.09 = 350.67/x
  3. Step 3: Cross multiply
    639.39x = 959.09 × 350.67
  4. Step 4: Simplify right side
    639.39x = 336,324.09
  5. Step 5: Solve for x
    x = 336,324.09/639.39
  6. Step 6: Final answer
    x = 526.01

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