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Finding the Fourth Proportional to 269.81, 404.81 and 107.60

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Solution

The fourth proportional to 269.81, 404.81 and 107.60 is: 161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.81 : 404.81 = 107.60 : x
  2. Step 2: Convert to fraction form
    269.81/404.81 = 107.60/x
  3. Step 3: Cross multiply
    269.81x = 404.81 × 107.60
  4. Step 4: Simplify right side
    269.81x = 43,558.84
  5. Step 5: Solve for x
    x = 43,558.84/269.81
  6. Step 6: Final answer
    x = 161.45

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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.