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Finding the Fourth Proportional to 269.96, 372.51 and 153.50

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Solution

The fourth proportional to 269.96, 372.51 and 153.50 is: 211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.96 : 372.51 = 153.50 : x
  2. Step 2: Convert to fraction form
    269.96/372.51 = 153.50/x
  3. Step 3: Cross multiply
    269.96x = 372.51 × 153.50
  4. Step 4: Simplify right side
    269.96x = 57,180.29
  5. Step 5: Solve for x
    x = 57,180.29/269.96
  6. Step 6: Final answer
    x = 211.81

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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.