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Finding the Fourth Proportional to 285.54, 428.00 and 123.36

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Solution

The fourth proportional to 285.54, 428.00 and 123.36 is: 184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.54 : 428.00 = 123.36 : x
  2. Step 2: Convert to fraction form
    285.54/428.00 = 123.36/x
  3. Step 3: Cross multiply
    285.54x = 428.00 × 123.36
  4. Step 4: Simplify right side
    285.54x = 52,797.46
  5. Step 5: Solve for x
    x = 52,797.46/285.54
  6. Step 6: Final answer
    x = 184.90

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