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Finding the Fourth Proportional to 167.26, 230.78 and 127.90

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Solution

The fourth proportional to 167.26, 230.78 and 127.90 is: 176.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.26 : 230.78 = 127.90 : x
  2. Step 2: Convert to fraction form
    167.26/230.78 = 127.90/x
  3. Step 3: Cross multiply
    167.26x = 230.78 × 127.90
  4. Step 4: Simplify right side
    167.26x = 29,516.76
  5. Step 5: Solve for x
    x = 29,516.76/167.26
  6. Step 6: Final answer
    x = 176.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.