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Finding the Fourth Proportional to 319.87, 441.42 and 226.52

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Solution

The fourth proportional to 319.87, 441.42 and 226.52 is: 312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.87 : 441.42 = 226.52 : x
  2. Step 2: Convert to fraction form
    319.87/441.42 = 226.52/x
  3. Step 3: Cross multiply
    319.87x = 441.42 × 226.52
  4. Step 4: Simplify right side
    319.87x = 99,990.46
  5. Step 5: Solve for x
    x = 99,990.46/319.87
  6. Step 6: Final answer
    x = 312.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.