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Finding the Fourth Proportional to 1,263.74, 1,744.23 and 849.50

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Solution

The fourth proportional to 1,263.74, 1,744.23 and 849.50 is: 1,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.74 : 1,744.23 = 849.50 : x
  2. Step 2: Convert to fraction form
    1,263.74/1,744.23 = 849.50/x
  3. Step 3: Cross multiply
    1,263.74x = 1,744.23 × 849.50
  4. Step 4: Simplify right side
    1,263.74x = 1,481,723.39
  5. Step 5: Solve for x
    x = 1,481,723.39/1,263.74
  6. Step 6: Final answer
    x = 1,172.49

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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.