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Finding the Fourth Proportional to 171.95, 235.75 and 168.87

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Solution

The fourth proportional to 171.95, 235.75 and 168.87 is: 231.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.95 : 235.75 = 168.87 : x
  2. Step 2: Convert to fraction form
    171.95/235.75 = 168.87/x
  3. Step 3: Cross multiply
    171.95x = 235.75 × 168.87
  4. Step 4: Simplify right side
    171.95x = 39,811.10
  5. Step 5: Solve for x
    x = 39,811.10/171.95
  6. Step 6: Final answer
    x = 231.53

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.