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Finding the Fourth Proportional to 374.78, 561.68 and 169.32

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Solution

The fourth proportional to 374.78, 561.68 and 169.32 is: 253.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.78 : 561.68 = 169.32 : x
  2. Step 2: Convert to fraction form
    374.78/561.68 = 169.32/x
  3. Step 3: Cross multiply
    374.78x = 561.68 × 169.32
  4. Step 4: Simplify right side
    374.78x = 95,103.66
  5. Step 5: Solve for x
    x = 95,103.66/374.78
  6. Step 6: Final answer
    x = 253.76

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