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Finding the Fourth Proportional to 352.20, 525.75 and 309

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Solution

The fourth proportional to 352.20, 525.75 and 309 is: 461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.20 : 525.75 = 309 : x
  2. Step 2: Convert to fraction form
    352.20/525.75 = 309/x
  3. Step 3: Cross multiply
    352.20x = 525.75 × 309
  4. Step 4: Simplify right side
    352.20x = 162,456.75
  5. Step 5: Solve for x
    x = 162,456.75/352.20
  6. Step 6: Final answer
    x = 461.26

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