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Finding the Fourth Proportional to 269.77, 403.63 and 165.28

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Solution

The fourth proportional to 269.77, 403.63 and 165.28 is: 247.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.77 : 403.63 = 165.28 : x
  2. Step 2: Convert to fraction form
    269.77/403.63 = 165.28/x
  3. Step 3: Cross multiply
    269.77x = 403.63 × 165.28
  4. Step 4: Simplify right side
    269.77x = 66,711.97
  5. Step 5: Solve for x
    x = 66,711.97/269.77
  6. Step 6: Final answer
    x = 247.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.