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Finding the Fourth Proportional to 279.93, 386.43 and 186.75

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Solution

The fourth proportional to 279.93, 386.43 and 186.75 is: 257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.93 : 386.43 = 186.75 : x
  2. Step 2: Convert to fraction form
    279.93/386.43 = 186.75/x
  3. Step 3: Cross multiply
    279.93x = 386.43 × 186.75
  4. Step 4: Simplify right side
    279.93x = 72,165.80
  5. Step 5: Solve for x
    x = 72,165.80/279.93
  6. Step 6: Final answer
    x = 257.80

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