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Finding the Fourth Proportional to 480.29, 720.21 and 206.24

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Solution

The fourth proportional to 480.29, 720.21 and 206.24 is: 309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.29 : 720.21 = 206.24 : x
  2. Step 2: Convert to fraction form
    480.29/720.21 = 206.24/x
  3. Step 3: Cross multiply
    480.29x = 720.21 × 206.24
  4. Step 4: Simplify right side
    480.29x = 148,536.11
  5. Step 5: Solve for x
    x = 148,536.11/480.29
  6. Step 6: Final answer
    x = 309.26

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