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Finding the Fourth Proportional to 456.06, 684.11 and 131.46

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Solution

The fourth proportional to 456.06, 684.11 and 131.46 is: 197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.06 : 684.11 = 131.46 : x
  2. Step 2: Convert to fraction form
    456.06/684.11 = 131.46/x
  3. Step 3: Cross multiply
    456.06x = 684.11 × 131.46
  4. Step 4: Simplify right side
    456.06x = 89,933.10
  5. Step 5: Solve for x
    x = 89,933.10/456.06
  6. Step 6: Final answer
    x = 197.20

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