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Finding the Fourth Proportional to 418.74, 628.11 and 236.13

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Solution

The fourth proportional to 418.74, 628.11 and 236.13 is: 354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.74 : 628.11 = 236.13 : x
  2. Step 2: Convert to fraction form
    418.74/628.11 = 236.13/x
  3. Step 3: Cross multiply
    418.74x = 628.11 × 236.13
  4. Step 4: Simplify right side
    418.74x = 148,315.61
  5. Step 5: Solve for x
    x = 148,315.61/418.74
  6. Step 6: Final answer
    x = 354.20

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