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Finding the Fourth Proportional to 890.87, 1,336.37 and 232.73

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Solution

The fourth proportional to 890.87, 1,336.37 and 232.73 is: 349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.87 : 1,336.37 = 232.73 : x
  2. Step 2: Convert to fraction form
    890.87/1,336.37 = 232.73/x
  3. Step 3: Cross multiply
    890.87x = 1,336.37 × 232.73
  4. Step 4: Simplify right side
    890.87x = 311,005.54
  5. Step 5: Solve for x
    x = 311,005.54/890.87
  6. Step 6: Final answer
    x = 349.11

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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.