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Finding the Fourth Proportional to 351.84, 527.31 and 259.81

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Solution

The fourth proportional to 351.84, 527.31 and 259.81 is: 389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.84 : 527.31 = 259.81 : x
  2. Step 2: Convert to fraction form
    351.84/527.31 = 259.81/x
  3. Step 3: Cross multiply
    351.84x = 527.31 × 259.81
  4. Step 4: Simplify right side
    351.84x = 136,999.09
  5. Step 5: Solve for x
    x = 136,999.09/351.84
  6. Step 6: Final answer
    x = 389.37

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