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Finding the Fourth Proportional to 271.20, 373.88 and 229.66

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Solution

The fourth proportional to 271.20, 373.88 and 229.66 is: 316.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.20 : 373.88 = 229.66 : x
  2. Step 2: Convert to fraction form
    271.20/373.88 = 229.66/x
  3. Step 3: Cross multiply
    271.20x = 373.88 × 229.66
  4. Step 4: Simplify right side
    271.20x = 85,865.28
  5. Step 5: Solve for x
    x = 85,865.28/271.20
  6. Step 6: Final answer
    x = 316.61

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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.