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Finding the Fourth Proportional to 231.28, 346.79 and 94.28

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Solution

The fourth proportional to 231.28, 346.79 and 94.28 is: 141.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.28 : 346.79 = 94.28 : x
  2. Step 2: Convert to fraction form
    231.28/346.79 = 94.28/x
  3. Step 3: Cross multiply
    231.28x = 346.79 × 94.28
  4. Step 4: Simplify right side
    231.28x = 32,696.46
  5. Step 5: Solve for x
    x = 32,696.46/231.28
  6. Step 6: Final answer
    x = 141.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.