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Finding the Fourth Proportional to 94.80, 130.83 and 56.00

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Solution

The fourth proportional to 94.80, 130.83 and 56.00 is: 77.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.80 : 130.83 = 56.00 : x
  2. Step 2: Convert to fraction form
    94.80/130.83 = 56.00/x
  3. Step 3: Cross multiply
    94.80x = 130.83 × 56.00
  4. Step 4: Simplify right side
    94.80x = 7,325.83
  5. Step 5: Solve for x
    x = 7,325.83/94.80
  6. Step 6: Final answer
    x = 77.28

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