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Finding the Fourth Proportional to 253.83, 350.34 and 154.23

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Solution

The fourth proportional to 253.83, 350.34 and 154.23 is: 212.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.83 : 350.34 = 154.23 : x
  2. Step 2: Convert to fraction form
    253.83/350.34 = 154.23/x
  3. Step 3: Cross multiply
    253.83x = 350.34 × 154.23
  4. Step 4: Simplify right side
    253.83x = 54,032.94
  5. Step 5: Solve for x
    x = 54,032.94/253.83
  6. Step 6: Final answer
    x = 212.87

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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.