Home / 1,091.50-1,637.23-269.79

Finding the Fourth Proportional to 1,091.50, 1,637.23 and 269.79

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Solution

The fourth proportional to 1,091.50, 1,637.23 and 269.79 is: 404.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.50 : 1,637.23 = 269.79 : x
  2. Step 2: Convert to fraction form
    1,091.50/1,637.23 = 269.79/x
  3. Step 3: Cross multiply
    1,091.50x = 1,637.23 × 269.79
  4. Step 4: Simplify right side
    1,091.50x = 441,708.28
  5. Step 5: Solve for x
    x = 441,708.28/1,091.50
  6. Step 6: Final answer
    x = 404.68

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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.