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Finding the Fourth Proportional to 2,269.36, 3,402.78 and 808.48

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Solution

The fourth proportional to 2,269.36, 3,402.78 and 808.48 is: 1,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.36 : 3,402.78 = 808.48 : x
  2. Step 2: Convert to fraction form
    2,269.36/3,402.78 = 808.48/x
  3. Step 3: Cross multiply
    2,269.36x = 3,402.78 × 808.48
  4. Step 4: Simplify right side
    2,269.36x = 2,751,079.57
  5. Step 5: Solve for x
    x = 2,751,079.57/2,269.36
  6. Step 6: Final answer
    x = 1,212.27

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1.5x scale

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.