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Finding the Fourth Proportional to 513, 708.48 and 358.56

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Solution

The fourth proportional to 513, 708.48 and 358.56 is: 495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    513 : 708.48 = 358.56 : x
  2. Step 2: Convert to fraction form
    513/708.48 = 358.56/x
  3. Step 3: Cross multiply
    513x = 708.48 × 358.56
  4. Step 4: Simplify right side
    513x = 254,032.59
  5. Step 5: Solve for x
    x = 254,032.59/513
  6. Step 6: Final answer
    x = 495.19

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