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Finding the Fourth Proportional to 1,781.91, 2,673 and 483.39

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Solution

The fourth proportional to 1,781.91, 2,673 and 483.39 is: 725.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.91 : 2,673 = 483.39 : x
  2. Step 2: Convert to fraction form
    1,781.91/2,673 = 483.39/x
  3. Step 3: Cross multiply
    1,781.91x = 2,673 × 483.39
  4. Step 4: Simplify right side
    1,781.91x = 1,292,101.47
  5. Step 5: Solve for x
    x = 1,292,101.47/1,781.91
  6. Step 6: Final answer
    x = 725.12

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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.