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Finding the Fourth Proportional to 478.92, 718.29 and 154.26

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Solution

The fourth proportional to 478.92, 718.29 and 154.26 is: 231.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.92 : 718.29 = 154.26 : x
  2. Step 2: Convert to fraction form
    478.92/718.29 = 154.26/x
  3. Step 3: Cross multiply
    478.92x = 718.29 × 154.26
  4. Step 4: Simplify right side
    478.92x = 110,803.42
  5. Step 5: Solve for x
    x = 110,803.42/478.92
  6. Step 6: Final answer
    x = 231.36

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