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Finding the Fourth Proportional to 231.42, 345.42 and 204.09

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Solution

The fourth proportional to 231.42, 345.42 and 204.09 is: 304.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.42 : 345.42 = 204.09 : x
  2. Step 2: Convert to fraction form
    231.42/345.42 = 204.09/x
  3. Step 3: Cross multiply
    231.42x = 345.42 × 204.09
  4. Step 4: Simplify right side
    231.42x = 70,496.77
  5. Step 5: Solve for x
    x = 70,496.77/231.42
  6. Step 6: Final answer
    x = 304.63

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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.