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Finding the Fourth Proportional to 253.71, 349.97 and 201.17

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Solution

The fourth proportional to 253.71, 349.97 and 201.17 is: 277.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.71 : 349.97 = 201.17 : x
  2. Step 2: Convert to fraction form
    253.71/349.97 = 201.17/x
  3. Step 3: Cross multiply
    253.71x = 349.97 × 201.17
  4. Step 4: Simplify right side
    253.71x = 70,400.71
  5. Step 5: Solve for x
    x = 70,400.71/253.71
  6. Step 6: Final answer
    x = 277.48

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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.