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Finding the Fourth Proportional to 480.68, 720.79 and 156.01

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Solution

The fourth proportional to 480.68, 720.79 and 156.01 is: 233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.68 : 720.79 = 156.01 : x
  2. Step 2: Convert to fraction form
    480.68/720.79 = 156.01/x
  3. Step 3: Cross multiply
    480.68x = 720.79 × 156.01
  4. Step 4: Simplify right side
    480.68x = 112,446.06
  5. Step 5: Solve for x
    x = 112,446.06/480.68
  6. Step 6: Final answer
    x = 233.93

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