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Finding the Fourth Proportional to 673, 928.80 and 378.28

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Solution

The fourth proportional to 673, 928.80 and 378.28 is: 522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    673 : 928.80 = 378.28 : x
  2. Step 2: Convert to fraction form
    673/928.80 = 378.28/x
  3. Step 3: Cross multiply
    673x = 928.80 × 378.28
  4. Step 4: Simplify right side
    673x = 351,346.46
  5. Step 5: Solve for x
    x = 351,346.46/673
  6. Step 6: Final answer
    x = 522.06

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