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Finding the Fourth Proportional to 231.55, 349.79 and 229.52

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Solution

The fourth proportional to 231.55, 349.79 and 229.52 is: 346.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.55 : 349.79 = 229.52 : x
  2. Step 2: Convert to fraction form
    231.55/349.79 = 229.52/x
  3. Step 3: Cross multiply
    231.55x = 349.79 × 229.52
  4. Step 4: Simplify right side
    231.55x = 80,283.80
  5. Step 5: Solve for x
    x = 80,283.80/231.55
  6. Step 6: Final answer
    x = 346.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.