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Finding the Fourth Proportional to 561.62, 842.42 and 171.62

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Solution

The fourth proportional to 561.62, 842.42 and 171.62 is: 257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.62 : 842.42 = 171.62 : x
  2. Step 2: Convert to fraction form
    561.62/842.42 = 171.62/x
  3. Step 3: Cross multiply
    561.62x = 842.42 × 171.62
  4. Step 4: Simplify right side
    561.62x = 144,576.12
  5. Step 5: Solve for x
    x = 144,576.12/561.62
  6. Step 6: Final answer
    x = 257.43

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