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Finding the Fourth Proportional to 167.21, 231.25 and 146.46

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Solution

The fourth proportional to 167.21, 231.25 and 146.46 is: 202.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.21 : 231.25 = 146.46 : x
  2. Step 2: Convert to fraction form
    167.21/231.25 = 146.46/x
  3. Step 3: Cross multiply
    167.21x = 231.25 × 146.46
  4. Step 4: Simplify right side
    167.21x = 33,867.35
  5. Step 5: Solve for x
    x = 33,867.35/167.21
  6. Step 6: Final answer
    x = 202.54

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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.