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Finding the Fourth Proportional to 253.82, 350.21 and 190.85

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Solution

The fourth proportional to 253.82, 350.21 and 190.85 is: 263.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.82 : 350.21 = 190.85 : x
  2. Step 2: Convert to fraction form
    253.82/350.21 = 190.85/x
  3. Step 3: Cross multiply
    253.82x = 350.21 × 190.85
  4. Step 4: Simplify right side
    253.82x = 66,838.87
  5. Step 5: Solve for x
    x = 66,838.87/253.82
  6. Step 6: Final answer
    x = 263.34

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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.