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Finding the Fourth Proportional to 611.55, 917.19 and 367.74

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Solution

The fourth proportional to 611.55, 917.19 and 367.74 is: 551.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.55 : 917.19 = 367.74 : x
  2. Step 2: Convert to fraction form
    611.55/917.19 = 367.74/x
  3. Step 3: Cross multiply
    611.55x = 917.19 × 367.74
  4. Step 4: Simplify right side
    611.55x = 337,287.45
  5. Step 5: Solve for x
    x = 337,287.45/611.55
  6. Step 6: Final answer
    x = 551.53

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