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Finding the Fourth Proportional to 231.68, 319.27 and 166.07

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Solution

The fourth proportional to 231.68, 319.27 and 166.07 is: 228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.68 : 319.27 = 166.07 : x
  2. Step 2: Convert to fraction form
    231.68/319.27 = 166.07/x
  3. Step 3: Cross multiply
    231.68x = 319.27 × 166.07
  4. Step 4: Simplify right side
    231.68x = 53,019.57
  5. Step 5: Solve for x
    x = 53,019.57/231.68
  6. Step 6: Final answer
    x = 228.85

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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.