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Finding the Fourth Proportional to 628.18, 942.06 and 298.78

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Solution

The fourth proportional to 628.18, 942.06 and 298.78 is: 448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.18 : 942.06 = 298.78 : x
  2. Step 2: Convert to fraction form
    628.18/942.06 = 298.78/x
  3. Step 3: Cross multiply
    628.18x = 942.06 × 298.78
  4. Step 4: Simplify right side
    628.18x = 281,468.69
  5. Step 5: Solve for x
    x = 281,468.69/628.18
  6. Step 6: Final answer
    x = 448.07

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