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Finding the Fourth Proportional to 229.18, 316.32 and 141.80

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Solution

The fourth proportional to 229.18, 316.32 and 141.80 is: 195.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.18 : 316.32 = 141.80 : x
  2. Step 2: Convert to fraction form
    229.18/316.32 = 141.80/x
  3. Step 3: Cross multiply
    229.18x = 316.32 × 141.80
  4. Step 4: Simplify right side
    229.18x = 44,854.31
  5. Step 5: Solve for x
    x = 44,854.31/229.18
  6. Step 6: Final answer
    x = 195.72

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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.