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Finding the Fourth Proportional to 388.42, 581.92 and 353.59

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Solution

The fourth proportional to 388.42, 581.92 and 353.59 is: 529.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.42 : 581.92 = 353.59 : x
  2. Step 2: Convert to fraction form
    388.42/581.92 = 353.59/x
  3. Step 3: Cross multiply
    388.42x = 581.92 × 353.59
  4. Step 4: Simplify right side
    388.42x = 205,758.75
  5. Step 5: Solve for x
    x = 205,758.75/388.42
  6. Step 6: Final answer
    x = 529.74

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