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Finding the Fourth Proportional to 318.03, 438.86 and 178.15

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Solution

The fourth proportional to 318.03, 438.86 and 178.15 is: 245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.03 : 438.86 = 178.15 : x
  2. Step 2: Convert to fraction form
    318.03/438.86 = 178.15/x
  3. Step 3: Cross multiply
    318.03x = 438.86 × 178.15
  4. Step 4: Simplify right side
    318.03x = 78,185.18
  5. Step 5: Solve for x
    x = 78,185.18/318.03
  6. Step 6: Final answer
    x = 245.85

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