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Finding the Fourth Proportional to 253.73, 350.09 and 154.17

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Solution

The fourth proportional to 253.73, 350.09 and 154.17 is: 212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.73 : 350.09 = 154.17 : x
  2. Step 2: Convert to fraction form
    253.73/350.09 = 154.17/x
  3. Step 3: Cross multiply
    253.73x = 350.09 × 154.17
  4. Step 4: Simplify right side
    253.73x = 53,973.18
  5. Step 5: Solve for x
    x = 53,973.18/253.73
  6. Step 6: Final answer
    x = 212.72

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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.