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Finding the Fourth Proportional to 663.11, 915.03 and 368.35

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Solution

The fourth proportional to 663.11, 915.03 and 368.35 is: 508.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.11 : 915.03 = 368.35 : x
  2. Step 2: Convert to fraction form
    663.11/915.03 = 368.35/x
  3. Step 3: Cross multiply
    663.11x = 915.03 × 368.35
  4. Step 4: Simplify right side
    663.11x = 337,049.01
  5. Step 5: Solve for x
    x = 337,049.01/663.11
  6. Step 6: Final answer
    x = 508.29

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