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Finding the Fourth Proportional to 229.58, 316.90 and 141.12

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Solution

The fourth proportional to 229.58, 316.90 and 141.12 is: 194.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.58 : 316.90 = 141.12 : x
  2. Step 2: Convert to fraction form
    229.58/316.90 = 141.12/x
  3. Step 3: Cross multiply
    229.58x = 316.90 × 141.12
  4. Step 4: Simplify right side
    229.58x = 44,720.93
  5. Step 5: Solve for x
    x = 44,720.93/229.58
  6. Step 6: Final answer
    x = 194.79

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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.