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Finding the Fourth Proportional to 528.18, 792.28 and 235.61

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Solution

The fourth proportional to 528.18, 792.28 and 235.61 is: 353.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.18 : 792.28 = 235.61 : x
  2. Step 2: Convert to fraction form
    528.18/792.28 = 235.61/x
  3. Step 3: Cross multiply
    528.18x = 792.28 × 235.61
  4. Step 4: Simplify right side
    528.18x = 186,665.93
  5. Step 5: Solve for x
    x = 186,665.93/528.18
  6. Step 6: Final answer
    x = 353.41

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