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Finding the Fourth Proportional to 628.04, 866.75 and 366.05

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Solution

The fourth proportional to 628.04, 866.75 and 366.05 is: 505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.04 : 866.75 = 366.05 : x
  2. Step 2: Convert to fraction form
    628.04/866.75 = 366.05/x
  3. Step 3: Cross multiply
    628.04x = 866.75 × 366.05
  4. Step 4: Simplify right side
    628.04x = 317,273.84
  5. Step 5: Solve for x
    x = 317,273.84/628.04
  6. Step 6: Final answer
    x = 505.18

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