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Finding the Fourth Proportional to 353.91, 530.86 and 191.55

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Solution

The fourth proportional to 353.91, 530.86 and 191.55 is: 287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.91 : 530.86 = 191.55 : x
  2. Step 2: Convert to fraction form
    353.91/530.86 = 191.55/x
  3. Step 3: Cross multiply
    353.91x = 530.86 × 191.55
  4. Step 4: Simplify right side
    353.91x = 101,686.23
  5. Step 5: Solve for x
    x = 101,686.23/353.91
  6. Step 6: Final answer
    x = 287.32

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