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Finding the Fourth Proportional to 312.82, 468.88 and 130.16

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Solution

The fourth proportional to 312.82, 468.88 and 130.16 is: 195.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.82 : 468.88 = 130.16 : x
  2. Step 2: Convert to fraction form
    312.82/468.88 = 130.16/x
  3. Step 3: Cross multiply
    312.82x = 468.88 × 130.16
  4. Step 4: Simplify right side
    312.82x = 61,029.42
  5. Step 5: Solve for x
    x = 61,029.42/312.82
  6. Step 6: Final answer
    x = 195.09

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