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Finding the Fourth Proportional to 480.31, 720.46 and 155.69

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Solution

The fourth proportional to 480.31, 720.46 and 155.69 is: 233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.31 : 720.46 = 155.69 : x
  2. Step 2: Convert to fraction form
    480.31/720.46 = 155.69/x
  3. Step 3: Cross multiply
    480.31x = 720.46 × 155.69
  4. Step 4: Simplify right side
    480.31x = 112,167.71
  5. Step 5: Solve for x
    x = 112,167.71/480.31
  6. Step 6: Final answer
    x = 233.53

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