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Finding the Fourth Proportional to 345.21, 476.37 and 189.96

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Solution

The fourth proportional to 345.21, 476.37 and 189.96 is: 262.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.21 : 476.37 = 189.96 : x
  2. Step 2: Convert to fraction form
    345.21/476.37 = 189.96/x
  3. Step 3: Cross multiply
    345.21x = 476.37 × 189.96
  4. Step 4: Simplify right side
    345.21x = 90,491.25
  5. Step 5: Solve for x
    x = 90,491.25/345.21
  6. Step 6: Final answer
    x = 262.13

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