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Finding the Fourth Proportional to 836.54, 1,255.08 and 403.64

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Solution

The fourth proportional to 836.54, 1,255.08 and 403.64 is: 605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.54 : 1,255.08 = 403.64 : x
  2. Step 2: Convert to fraction form
    836.54/1,255.08 = 403.64/x
  3. Step 3: Cross multiply
    836.54x = 1,255.08 × 403.64
  4. Step 4: Simplify right side
    836.54x = 506,600.49
  5. Step 5: Solve for x
    x = 506,600.49/836.54
  6. Step 6: Final answer
    x = 605.59

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