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Finding the Fourth Proportional to 2,696.88, 4,044.70 and 749.22

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Solution

The fourth proportional to 2,696.88, 4,044.70 and 749.22 is: 1,123.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.88 : 4,044.70 = 749.22 : x
  2. Step 2: Convert to fraction form
    2,696.88/4,044.70 = 749.22/x
  3. Step 3: Cross multiply
    2,696.88x = 4,044.70 × 749.22
  4. Step 4: Simplify right side
    2,696.88x = 3,030,370.13
  5. Step 5: Solve for x
    x = 3,030,370.13/2,696.88
  6. Step 6: Final answer
    x = 1,123.66

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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.