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Finding the Fourth Proportional to 230.10, 343.80 and 225.78

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Solution

The fourth proportional to 230.10, 343.80 and 225.78 is: 337.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.10 : 343.80 = 225.78 : x
  2. Step 2: Convert to fraction form
    230.10/343.80 = 225.78/x
  3. Step 3: Cross multiply
    230.10x = 343.80 × 225.78
  4. Step 4: Simplify right side
    230.10x = 77,623.16
  5. Step 5: Solve for x
    x = 77,623.16/230.10
  6. Step 6: Final answer
    x = 337.35

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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.