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Finding the Fourth Proportional to 1,781.18, 2,671.77 and 482.62

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Solution

The fourth proportional to 1,781.18, 2,671.77 and 482.62 is: 723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.18 : 2,671.77 = 482.62 : x
  2. Step 2: Convert to fraction form
    1,781.18/2,671.77 = 482.62/x
  3. Step 3: Cross multiply
    1,781.18x = 2,671.77 × 482.62
  4. Step 4: Simplify right side
    1,781.18x = 1,289,436.28
  5. Step 5: Solve for x
    x = 1,289,436.28/1,781.18
  6. Step 6: Final answer
    x = 723.92

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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.