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Finding the Fourth Proportional to 269.29, 403.93 and 178.39

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Solution

The fourth proportional to 269.29, 403.93 and 178.39 is: 267.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.29 : 403.93 = 178.39 : x
  2. Step 2: Convert to fraction form
    269.29/403.93 = 178.39/x
  3. Step 3: Cross multiply
    269.29x = 403.93 × 178.39
  4. Step 4: Simplify right side
    269.29x = 72,056.63
  5. Step 5: Solve for x
    x = 72,056.63/269.29
  6. Step 6: Final answer
    x = 267.58

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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.