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Finding the Fourth Proportional to 313.97, 433.85 and 226.49

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Solution

The fourth proportional to 313.97, 433.85 and 226.49 is: 312.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.97 : 433.85 = 226.49 : x
  2. Step 2: Convert to fraction form
    313.97/433.85 = 226.49/x
  3. Step 3: Cross multiply
    313.97x = 433.85 × 226.49
  4. Step 4: Simplify right side
    313.97x = 98,259.38
  5. Step 5: Solve for x
    x = 98,259.38/313.97
  6. Step 6: Final answer
    x = 312.96

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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.