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Finding the Fourth Proportional to 252.11, 347.94 and 210.60

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Solution

The fourth proportional to 252.11, 347.94 and 210.60 is: 290.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.11 : 347.94 = 210.60 : x
  2. Step 2: Convert to fraction form
    252.11/347.94 = 210.60/x
  3. Step 3: Cross multiply
    252.11x = 347.94 × 210.60
  4. Step 4: Simplify right side
    252.11x = 73,276.16
  5. Step 5: Solve for x
    x = 73,276.16/252.11
  6. Step 6: Final answer
    x = 290.66

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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.