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Finding the Fourth Proportional to 64.71, 97.08 and 40.83

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Solution

The fourth proportional to 64.71, 97.08 and 40.83 is: 61.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.71 : 97.08 = 40.83 : x
  2. Step 2: Convert to fraction form
    64.71/97.08 = 40.83/x
  3. Step 3: Cross multiply
    64.71x = 97.08 × 40.83
  4. Step 4: Simplify right side
    64.71x = 3,963.57
  5. Step 5: Solve for x
    x = 3,963.57/64.71
  6. Step 6: Final answer
    x = 61.25

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