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Finding the Fourth Proportional to 253.70, 350.21 and 195.38

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Solution

The fourth proportional to 253.70, 350.21 and 195.38 is: 269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.70 : 350.21 = 195.38 : x
  2. Step 2: Convert to fraction form
    253.70/350.21 = 195.38/x
  3. Step 3: Cross multiply
    253.70x = 350.21 × 195.38
  4. Step 4: Simplify right side
    253.70x = 68,422.77
  5. Step 5: Solve for x
    x = 68,422.77/253.70
  6. Step 6: Final answer
    x = 269.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.