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Finding the Fourth Proportional to 279.59, 385.80 and 174.76

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Solution

The fourth proportional to 279.59, 385.80 and 174.76 is: 241.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.59 : 385.80 = 174.76 : x
  2. Step 2: Convert to fraction form
    279.59/385.80 = 174.76/x
  3. Step 3: Cross multiply
    279.59x = 385.80 × 174.76
  4. Step 4: Simplify right side
    279.59x = 67,420.79
  5. Step 5: Solve for x
    x = 67,420.79/279.59
  6. Step 6: Final answer
    x = 241.15

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