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Finding the Fourth Proportional to 1,837.49, 2,756.21 and 667.49

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Solution

The fourth proportional to 1,837.49, 2,756.21 and 667.49 is: 1,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,837.49 : 2,756.21 = 667.49 : x
  2. Step 2: Convert to fraction form
    1,837.49/2,756.21 = 667.49/x
  3. Step 3: Cross multiply
    1,837.49x = 2,756.21 × 667.49
  4. Step 4: Simplify right side
    1,837.49x = 1,839,725.49
  5. Step 5: Solve for x
    x = 1,839,725.49/1,837.49
  6. Step 6: Final answer
    x = 1,001.22

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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.