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Finding the Fourth Proportional to 351.13, 484.59 and 211.27

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Solution

The fourth proportional to 351.13, 484.59 and 211.27 is: 291.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.13 : 484.59 = 211.27 : x
  2. Step 2: Convert to fraction form
    351.13/484.59 = 211.27/x
  3. Step 3: Cross multiply
    351.13x = 484.59 × 211.27
  4. Step 4: Simplify right side
    351.13x = 102,379.33
  5. Step 5: Solve for x
    x = 102,379.33/351.13
  6. Step 6: Final answer
    x = 291.57

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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.