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Finding the Fourth Proportional to 1,788.72, 2,683.49 and 634.47

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Solution

The fourth proportional to 1,788.72, 2,683.49 and 634.47 is: 951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.72 : 2,683.49 = 634.47 : x
  2. Step 2: Convert to fraction form
    1,788.72/2,683.49 = 634.47/x
  3. Step 3: Cross multiply
    1,788.72x = 2,683.49 × 634.47
  4. Step 4: Simplify right side
    1,788.72x = 1,702,590.73
  5. Step 5: Solve for x
    x = 1,702,590.73/1,788.72
  6. Step 6: Final answer
    x = 951.85

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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.