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Finding the Fourth Proportional to 230.65, 343.74 and 217.32

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Solution

The fourth proportional to 230.65, 343.74 and 217.32 is: 323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.65 : 343.74 = 217.32 : x
  2. Step 2: Convert to fraction form
    230.65/343.74 = 217.32/x
  3. Step 3: Cross multiply
    230.65x = 343.74 × 217.32
  4. Step 4: Simplify right side
    230.65x = 74,701.10
  5. Step 5: Solve for x
    x = 74,701.10/230.65
  6. Step 6: Final answer
    x = 323.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.