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Finding the Fourth Proportional to 384.76, 531 and 229.54

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Solution

The fourth proportional to 384.76, 531 and 229.54 is: 316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.76 : 531 = 229.54 : x
  2. Step 2: Convert to fraction form
    384.76/531 = 229.54/x
  3. Step 3: Cross multiply
    384.76x = 531 × 229.54
  4. Step 4: Simplify right side
    384.76x = 121,885.74
  5. Step 5: Solve for x
    x = 121,885.74/384.76
  6. Step 6: Final answer
    x = 316.78

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