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Finding the Fourth Proportional to 252.11, 347.26 and 178.30

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Solution

The fourth proportional to 252.11, 347.26 and 178.30 is: 245.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.11 : 347.26 = 178.30 : x
  2. Step 2: Convert to fraction form
    252.11/347.26 = 178.30/x
  3. Step 3: Cross multiply
    252.11x = 347.26 × 178.30
  4. Step 4: Simplify right side
    252.11x = 61,913.83
  5. Step 5: Solve for x
    x = 61,913.83/252.11
  6. Step 6: Final answer
    x = 245.59

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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.