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Finding the Fourth Proportional to 369.26, 553.35 and 328.76

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Solution

The fourth proportional to 369.26, 553.35 and 328.76 is: 492.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.26 : 553.35 = 328.76 : x
  2. Step 2: Convert to fraction form
    369.26/553.35 = 328.76/x
  3. Step 3: Cross multiply
    369.26x = 553.35 × 328.76
  4. Step 4: Simplify right side
    369.26x = 181,919.35
  5. Step 5: Solve for x
    x = 181,919.35/369.26
  6. Step 6: Final answer
    x = 492.66

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