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Finding the Fourth Proportional to 1,335.33, 2,003.29 and 410.97

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Solution

The fourth proportional to 1,335.33, 2,003.29 and 410.97 is: 616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.33 : 2,003.29 = 410.97 : x
  2. Step 2: Convert to fraction form
    1,335.33/2,003.29 = 410.97/x
  3. Step 3: Cross multiply
    1,335.33x = 2,003.29 × 410.97
  4. Step 4: Simplify right side
    1,335.33x = 823,292.09
  5. Step 5: Solve for x
    x = 823,292.09/1,335.33
  6. Step 6: Final answer
    x = 616.55

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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.