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Finding the Fourth Proportional to 1,429.19, 1,972.26 and 799.71

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Solution

The fourth proportional to 1,429.19, 1,972.26 and 799.71 is: 1,103.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.19 : 1,972.26 = 799.71 : x
  2. Step 2: Convert to fraction form
    1,429.19/1,972.26 = 799.71/x
  3. Step 3: Cross multiply
    1,429.19x = 1,972.26 × 799.71
  4. Step 4: Simplify right side
    1,429.19x = 1,577,226.18
  5. Step 5: Solve for x
    x = 1,577,226.18/1,429.19
  6. Step 6: Final answer
    x = 1,103.58

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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.