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Finding the Fourth Proportional to 345.72, 518.64 and 183.60

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Solution

The fourth proportional to 345.72, 518.64 and 183.60 is: 275.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.72 : 518.64 = 183.60 : x
  2. Step 2: Convert to fraction form
    345.72/518.64 = 183.60/x
  3. Step 3: Cross multiply
    345.72x = 518.64 × 183.60
  4. Step 4: Simplify right side
    345.72x = 95,222.30
  5. Step 5: Solve for x
    x = 95,222.30/345.72
  6. Step 6: Final answer
    x = 275.43

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