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Finding the Fourth Proportional to 2,516.45, 3,774.54 and 667.63

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Solution

The fourth proportional to 2,516.45, 3,774.54 and 667.63 is: 1,001.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.45 : 3,774.54 = 667.63 : x
  2. Step 2: Convert to fraction form
    2,516.45/3,774.54 = 667.63/x
  3. Step 3: Cross multiply
    2,516.45x = 3,774.54 × 667.63
  4. Step 4: Simplify right side
    2,516.45x = 2,519,996.14
  5. Step 5: Solve for x
    x = 2,519,996.14/2,516.45
  6. Step 6: Final answer
    x = 1,001.41

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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.