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Finding the Fourth Proportional to 369.27, 553.28 and 260.84

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Solution

The fourth proportional to 369.27, 553.28 and 260.84 is: 390.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.27 : 553.28 = 260.84 : x
  2. Step 2: Convert to fraction form
    369.27/553.28 = 260.84/x
  3. Step 3: Cross multiply
    369.27x = 553.28 × 260.84
  4. Step 4: Simplify right side
    369.27x = 144,313.48
  5. Step 5: Solve for x
    x = 144,313.48/369.27
  6. Step 6: Final answer
    x = 390.81

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