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Finding the Fourth Proportional to 1,335.39, 2,003.05 and 410.95

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Solution

The fourth proportional to 1,335.39, 2,003.05 and 410.95 is: 616.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.39 : 2,003.05 = 410.95 : x
  2. Step 2: Convert to fraction form
    1,335.39/2,003.05 = 410.95/x
  3. Step 3: Cross multiply
    1,335.39x = 2,003.05 × 410.95
  4. Step 4: Simplify right side
    1,335.39x = 823,153.40
  5. Step 5: Solve for x
    x = 823,153.40/1,335.39
  6. Step 6: Final answer
    x = 616.41

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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.