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Finding the Fourth Proportional to 167.98, 252.53 and 137.77

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Solution

The fourth proportional to 167.98, 252.53 and 137.77 is: 207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.98 : 252.53 = 137.77 : x
  2. Step 2: Convert to fraction form
    167.98/252.53 = 137.77/x
  3. Step 3: Cross multiply
    167.98x = 252.53 × 137.77
  4. Step 4: Simplify right side
    167.98x = 34,791.06
  5. Step 5: Solve for x
    x = 34,791.06/167.98
  6. Step 6: Final answer
    x = 207.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.