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Finding the Fourth Proportional to 231.04, 316.75 and 226.95

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Solution

The fourth proportional to 231.04, 316.75 and 226.95 is: 311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.04 : 316.75 = 226.95 : x
  2. Step 2: Convert to fraction form
    231.04/316.75 = 226.95/x
  3. Step 3: Cross multiply
    231.04x = 316.75 × 226.95
  4. Step 4: Simplify right side
    231.04x = 71,886.41
  5. Step 5: Solve for x
    x = 71,886.41/231.04
  6. Step 6: Final answer
    x = 311.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.