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Finding the Fourth Proportional to 236.85, 354.81 and 159.60

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Solution

The fourth proportional to 236.85, 354.81 and 159.60 is: 239.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.85 : 354.81 = 159.60 : x
  2. Step 2: Convert to fraction form
    236.85/354.81 = 159.60/x
  3. Step 3: Cross multiply
    236.85x = 354.81 × 159.60
  4. Step 4: Simplify right side
    236.85x = 56,627.68
  5. Step 5: Solve for x
    x = 56,627.68/236.85
  6. Step 6: Final answer
    x = 239.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.