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Finding the Fourth Proportional to 351.26, 484.64 and 226.72

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Solution

The fourth proportional to 351.26, 484.64 and 226.72 is: 312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.26 : 484.64 = 226.72 : x
  2. Step 2: Convert to fraction form
    351.26/484.64 = 226.72/x
  3. Step 3: Cross multiply
    351.26x = 484.64 × 226.72
  4. Step 4: Simplify right side
    351.26x = 109,877.58
  5. Step 5: Solve for x
    x = 109,877.58/351.26
  6. Step 6: Final answer
    x = 312.81

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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.