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Finding the Fourth Proportional to 229.76, 316.88 and 167.52

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Solution

The fourth proportional to 229.76, 316.88 and 167.52 is: 231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.76 : 316.88 = 167.52 : x
  2. Step 2: Convert to fraction form
    229.76/316.88 = 167.52/x
  3. Step 3: Cross multiply
    229.76x = 316.88 × 167.52
  4. Step 4: Simplify right side
    229.76x = 53,083.74
  5. Step 5: Solve for x
    x = 53,083.74/229.76
  6. Step 6: Final answer
    x = 231.04

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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.