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Finding the Fourth Proportional to 167.12, 231.24 and 145.36

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Solution

The fourth proportional to 167.12, 231.24 and 145.36 is: 201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.12 : 231.24 = 145.36 : x
  2. Step 2: Convert to fraction form
    167.12/231.24 = 145.36/x
  3. Step 3: Cross multiply
    167.12x = 231.24 × 145.36
  4. Step 4: Simplify right side
    167.12x = 33,613.05
  5. Step 5: Solve for x
    x = 33,613.05/167.12
  6. Step 6: Final answer
    x = 201.13

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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.