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Finding the Fourth Proportional to 2,453.80, 3,679.44 and 722.20

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Solution

The fourth proportional to 2,453.80, 3,679.44 and 722.20 is: 1,082.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.80 : 3,679.44 = 722.20 : x
  2. Step 2: Convert to fraction form
    2,453.80/3,679.44 = 722.20/x
  3. Step 3: Cross multiply
    2,453.80x = 3,679.44 × 722.20
  4. Step 4: Simplify right side
    2,453.80x = 2,657,291.57
  5. Step 5: Solve for x
    x = 2,657,291.57/2,453.80
  6. Step 6: Final answer
    x = 1,082.93

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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.