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Finding the Fourth Proportional to 245.27, 369.69 and 231.15

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Solution

The fourth proportional to 245.27, 369.69 and 231.15 is: 348.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.27 : 369.69 = 231.15 : x
  2. Step 2: Convert to fraction form
    245.27/369.69 = 231.15/x
  3. Step 3: Cross multiply
    245.27x = 369.69 × 231.15
  4. Step 4: Simplify right side
    245.27x = 85,453.84
  5. Step 5: Solve for x
    x = 85,453.84/245.27
  6. Step 6: Final answer
    x = 348.41

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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.