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Finding the Fourth Proportional to 157.28, 235.98 and 54.58

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Solution

The fourth proportional to 157.28, 235.98 and 54.58 is: 81.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.28 : 235.98 = 54.58 : x
  2. Step 2: Convert to fraction form
    157.28/235.98 = 54.58/x
  3. Step 3: Cross multiply
    157.28x = 235.98 × 54.58
  4. Step 4: Simplify right side
    157.28x = 12,878.61
  5. Step 5: Solve for x
    x = 12,878.61/157.28
  6. Step 6: Final answer
    x = 81.88

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