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Finding the Fourth Proportional to 252.10, 346.43 and 211.60

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Solution

The fourth proportional to 252.10, 346.43 and 211.60 is: 290.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.10 : 346.43 = 211.60 : x
  2. Step 2: Convert to fraction form
    252.10/346.43 = 211.60/x
  3. Step 3: Cross multiply
    252.10x = 346.43 × 211.60
  4. Step 4: Simplify right side
    252.10x = 73,304.59
  5. Step 5: Solve for x
    x = 73,304.59/252.10
  6. Step 6: Final answer
    x = 290.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.