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Finding the Fourth Proportional to 351.09, 484.55 and 203.77

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Solution

The fourth proportional to 351.09, 484.55 and 203.77 is: 281.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.09 : 484.55 = 203.77 : x
  2. Step 2: Convert to fraction form
    351.09/484.55 = 203.77/x
  3. Step 3: Cross multiply
    351.09x = 484.55 × 203.77
  4. Step 4: Simplify right side
    351.09x = 98,736.75
  5. Step 5: Solve for x
    x = 98,736.75/351.09
  6. Step 6: Final answer
    x = 281.23

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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.