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Finding the Fourth Proportional to 379.59, 569.36 and 105.69

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Solution

The fourth proportional to 379.59, 569.36 and 105.69 is: 158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.59 : 569.36 = 105.69 : x
  2. Step 2: Convert to fraction form
    379.59/569.36 = 105.69/x
  3. Step 3: Cross multiply
    379.59x = 569.36 × 105.69
  4. Step 4: Simplify right side
    379.59x = 60,175.66
  5. Step 5: Solve for x
    x = 60,175.66/379.59
  6. Step 6: Final answer
    x = 158.53

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