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Finding the Fourth Proportional to 1,463.12, 2,019.15 and 799.95

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Solution

The fourth proportional to 1,463.12, 2,019.15 and 799.95 is: 1,103.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,463.12 : 2,019.15 = 799.95 : x
  2. Step 2: Convert to fraction form
    1,463.12/2,019.15 = 799.95/x
  3. Step 3: Cross multiply
    1,463.12x = 2,019.15 × 799.95
  4. Step 4: Simplify right side
    1,463.12x = 1,615,222.09
  5. Step 5: Solve for x
    x = 1,615,222.09/1,463.12
  6. Step 6: Final answer
    x = 1,103.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.