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Finding the Fourth Proportional to 167.93, 252.35 and 90.95

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Solution

The fourth proportional to 167.93, 252.35 and 90.95 is: 136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.93 : 252.35 = 90.95 : x
  2. Step 2: Convert to fraction form
    167.93/252.35 = 90.95/x
  3. Step 3: Cross multiply
    167.93x = 252.35 × 90.95
  4. Step 4: Simplify right side
    167.93x = 22,951.23
  5. Step 5: Solve for x
    x = 22,951.23/167.93
  6. Step 6: Final answer
    x = 136.67

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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.