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Finding the Fourth Proportional to 1,334.43, 2,001.33 and 409.77

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Solution

The fourth proportional to 1,334.43, 2,001.33 and 409.77 is: 614.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,334.43 : 2,001.33 = 409.77 : x
  2. Step 2: Convert to fraction form
    1,334.43/2,001.33 = 409.77/x
  3. Step 3: Cross multiply
    1,334.43x = 2,001.33 × 409.77
  4. Step 4: Simplify right side
    1,334.43x = 820,084.99
  5. Step 5: Solve for x
    x = 820,084.99/1,334.43
  6. Step 6: Final answer
    x = 614.56

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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.