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Finding the Fourth Proportional to 351.03, 484.28 and 211.14

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Solution

The fourth proportional to 351.03, 484.28 and 211.14 is: 291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.03 : 484.28 = 211.14 : x
  2. Step 2: Convert to fraction form
    351.03/484.28 = 211.14/x
  3. Step 3: Cross multiply
    351.03x = 484.28 × 211.14
  4. Step 4: Simplify right side
    351.03x = 102,250.62
  5. Step 5: Solve for x
    x = 102,250.62/351.03
  6. Step 6: Final answer
    x = 291.28

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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.