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Finding the Fourth Proportional to 1,343.87, 2,018.12 and 799.47

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Solution

The fourth proportional to 1,343.87, 2,018.12 and 799.47 is: 1,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.87 : 2,018.12 = 799.47 : x
  2. Step 2: Convert to fraction form
    1,343.87/2,018.12 = 799.47/x
  3. Step 3: Cross multiply
    1,343.87x = 2,018.12 × 799.47
  4. Step 4: Simplify right side
    1,343.87x = 1,613,422.40
  5. Step 5: Solve for x
    x = 1,613,422.40/1,343.87
  6. Step 6: Final answer
    x = 1,200.58

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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.