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Finding the Fourth Proportional to 167.45, 231.16 and 115.01

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Solution

The fourth proportional to 167.45, 231.16 and 115.01 is: 158.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.45 : 231.16 = 115.01 : x
  2. Step 2: Convert to fraction form
    167.45/231.16 = 115.01/x
  3. Step 3: Cross multiply
    167.45x = 231.16 × 115.01
  4. Step 4: Simplify right side
    167.45x = 26,585.14
  5. Step 5: Solve for x
    x = 26,585.14/167.45
  6. Step 6: Final answer
    x = 158.77

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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.