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Finding the Fourth Proportional to 236.85, 354.72 and 155.49

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Solution

The fourth proportional to 236.85, 354.72 and 155.49 is: 232.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.85 : 354.72 = 155.49 : x
  2. Step 2: Convert to fraction form
    236.85/354.72 = 155.49/x
  3. Step 3: Cross multiply
    236.85x = 354.72 × 155.49
  4. Step 4: Simplify right side
    236.85x = 55,155.41
  5. Step 5: Solve for x
    x = 55,155.41/236.85
  6. Step 6: Final answer
    x = 232.87

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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.