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Finding the Fourth Proportional to 236.37, 354.75 and 113.12

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Solution

The fourth proportional to 236.37, 354.75 and 113.12 is: 169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.37 : 354.75 = 113.12 : x
  2. Step 2: Convert to fraction form
    236.37/354.75 = 113.12/x
  3. Step 3: Cross multiply
    236.37x = 354.75 × 113.12
  4. Step 4: Simplify right side
    236.37x = 40,130.40
  5. Step 5: Solve for x
    x = 40,130.40/236.37
  6. Step 6: Final answer
    x = 169.78

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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.