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Finding the Fourth Proportional to 1,283.82, 1,925.49 and 799.86

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Solution

The fourth proportional to 1,283.82, 1,925.49 and 799.86 is: 1,199.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.82 : 1,925.49 = 799.86 : x
  2. Step 2: Convert to fraction form
    1,283.82/1,925.49 = 799.86/x
  3. Step 3: Cross multiply
    1,283.82x = 1,925.49 × 799.86
  4. Step 4: Simplify right side
    1,283.82x = 1,540,122.43
  5. Step 5: Solve for x
    x = 1,540,122.43/1,283.82
  6. Step 6: Final answer
    x = 1,199.64

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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.