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Finding the Fourth Proportional to 492.72, 738.40 and 384

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Solution

The fourth proportional to 492.72, 738.40 and 384 is: 575.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.72 : 738.40 = 384 : x
  2. Step 2: Convert to fraction form
    492.72/738.40 = 384/x
  3. Step 3: Cross multiply
    492.72x = 738.40 × 384
  4. Step 4: Simplify right side
    492.72x = 283,545.60
  5. Step 5: Solve for x
    x = 283,545.60/492.72
  6. Step 6: Final answer
    x = 575.47

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