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Finding the Fourth Proportional to 174.53, 261.66 and 66.31

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Solution

The fourth proportional to 174.53, 261.66 and 66.31 is: 99.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.53 : 261.66 = 66.31 : x
  2. Step 2: Convert to fraction form
    174.53/261.66 = 66.31/x
  3. Step 3: Cross multiply
    174.53x = 261.66 × 66.31
  4. Step 4: Simplify right side
    174.53x = 17,350.67
  5. Step 5: Solve for x
    x = 17,350.67/174.53
  6. Step 6: Final answer
    x = 99.41

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