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Finding the Fourth Proportional to 230.68, 316.43 and 225.88

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Solution

The fourth proportional to 230.68, 316.43 and 225.88 is: 309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.68 : 316.43 = 225.88 : x
  2. Step 2: Convert to fraction form
    230.68/316.43 = 225.88/x
  3. Step 3: Cross multiply
    230.68x = 316.43 × 225.88
  4. Step 4: Simplify right side
    230.68x = 71,475.21
  5. Step 5: Solve for x
    x = 71,475.21/230.68
  6. Step 6: Final answer
    x = 309.85

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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.