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Finding the Fourth Proportional to 2,300.92, 3,451.38 and 761.92

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Solution

The fourth proportional to 2,300.92, 3,451.38 and 761.92 is: 1,142.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,300.92 : 3,451.38 = 761.92 : x
  2. Step 2: Convert to fraction form
    2,300.92/3,451.38 = 761.92/x
  3. Step 3: Cross multiply
    2,300.92x = 3,451.38 × 761.92
  4. Step 4: Simplify right side
    2,300.92x = 2,629,675.45
  5. Step 5: Solve for x
    x = 2,629,675.45/2,300.92
  6. Step 6: Final answer
    x = 1,142.88

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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.