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Finding the Fourth Proportional to 397.12, 595.56 and 123.20

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Solution

The fourth proportional to 397.12, 595.56 and 123.20 is: 184.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.12 : 595.56 = 123.20 : x
  2. Step 2: Convert to fraction form
    397.12/595.56 = 123.20/x
  3. Step 3: Cross multiply
    397.12x = 595.56 × 123.20
  4. Step 4: Simplify right side
    397.12x = 73,372.99
  5. Step 5: Solve for x
    x = 73,372.99/397.12
  6. Step 6: Final answer
    x = 184.76

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