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Finding the Fourth Proportional to 434.35, 650.95 and 331.25

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Solution

The fourth proportional to 434.35, 650.95 and 331.25 is: 496.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.35 : 650.95 = 331.25 : x
  2. Step 2: Convert to fraction form
    434.35/650.95 = 331.25/x
  3. Step 3: Cross multiply
    434.35x = 650.95 × 331.25
  4. Step 4: Simplify right side
    434.35x = 215,627.19
  5. Step 5: Solve for x
    x = 215,627.19/434.35
  6. Step 6: Final answer
    x = 496.44

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