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Finding the Fourth Proportional to 554.72, 831.90 and 359.60

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Solution

The fourth proportional to 554.72, 831.90 and 359.60 is: 539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.72 : 831.90 = 359.60 : x
  2. Step 2: Convert to fraction form
    554.72/831.90 = 359.60/x
  3. Step 3: Cross multiply
    554.72x = 831.90 × 359.60
  4. Step 4: Simplify right side
    554.72x = 299,151.24
  5. Step 5: Solve for x
    x = 299,151.24/554.72
  6. Step 6: Final answer
    x = 539.28

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