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Finding the Fourth Proportional to 167.31, 230.40 and 130.32

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Solution

The fourth proportional to 167.31, 230.40 and 130.32 is: 179.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.31 : 230.40 = 130.32 : x
  2. Step 2: Convert to fraction form
    167.31/230.40 = 130.32/x
  3. Step 3: Cross multiply
    167.31x = 230.40 × 130.32
  4. Step 4: Simplify right side
    167.31x = 30,025.73
  5. Step 5: Solve for x
    x = 30,025.73/167.31
  6. Step 6: Final answer
    x = 179.46

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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.