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Finding the Fourth Proportional to 1,671.73, 2,306.71 and 999.32

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Solution

The fourth proportional to 1,671.73, 2,306.71 and 999.32 is: 1,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.73 : 2,306.71 = 999.32 : x
  2. Step 2: Convert to fraction form
    1,671.73/2,306.71 = 999.32/x
  3. Step 3: Cross multiply
    1,671.73x = 2,306.71 × 999.32
  4. Step 4: Simplify right side
    1,671.73x = 2,305,141.44
  5. Step 5: Solve for x
    x = 2,305,141.44/1,671.73
  6. Step 6: Final answer
    x = 1,378.90

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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.