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Finding the Fourth Proportional to 170.61, 255.95 and 55.06

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Solution

The fourth proportional to 170.61, 255.95 and 55.06 is: 82.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.61 : 255.95 = 55.06 : x
  2. Step 2: Convert to fraction form
    170.61/255.95 = 55.06/x
  3. Step 3: Cross multiply
    170.61x = 255.95 × 55.06
  4. Step 4: Simplify right side
    170.61x = 14,093.49
  5. Step 5: Solve for x
    x = 14,093.49/170.61
  6. Step 6: Final answer
    x = 82.60

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