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Finding the Fourth Proportional to 497.78, 746.70 and 132.57

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Solution

The fourth proportional to 497.78, 746.70 and 132.57 is: 198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.78 : 746.70 = 132.57 : x
  2. Step 2: Convert to fraction form
    497.78/746.70 = 132.57/x
  3. Step 3: Cross multiply
    497.78x = 746.70 × 132.57
  4. Step 4: Simplify right side
    497.78x = 98,990.02
  5. Step 5: Solve for x
    x = 98,990.02/497.78
  6. Step 6: Final answer
    x = 198.86

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