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Finding the Fourth Proportional to 269.29, 404.21 and 245.53

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Solution

The fourth proportional to 269.29, 404.21 and 245.53 is: 368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.29 : 404.21 = 245.53 : x
  2. Step 2: Convert to fraction form
    269.29/404.21 = 245.53/x
  3. Step 3: Cross multiply
    269.29x = 404.21 × 245.53
  4. Step 4: Simplify right side
    269.29x = 99,245.68
  5. Step 5: Solve for x
    x = 99,245.68/269.29
  6. Step 6: Final answer
    x = 368.55

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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.