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Finding the Fourth Proportional to 2,450.82, 3,676.85 and 719.45

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Solution

The fourth proportional to 2,450.82, 3,676.85 and 719.45 is: 1,079.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,450.82 : 3,676.85 = 719.45 : x
  2. Step 2: Convert to fraction form
    2,450.82/3,676.85 = 719.45/x
  3. Step 3: Cross multiply
    2,450.82x = 3,676.85 × 719.45
  4. Step 4: Simplify right side
    2,450.82x = 2,645,287.75
  5. Step 5: Solve for x
    x = 2,645,287.75/2,450.82
  6. Step 6: Final answer
    x = 1,079.35

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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.