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Finding the Fourth Proportional to 2,453.24, 3,679.50 and 809.72

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Solution

The fourth proportional to 2,453.24, 3,679.50 and 809.72 is: 1,214.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.24 : 3,679.50 = 809.72 : x
  2. Step 2: Convert to fraction form
    2,453.24/3,679.50 = 809.72/x
  3. Step 3: Cross multiply
    2,453.24x = 3,679.50 × 809.72
  4. Step 4: Simplify right side
    2,453.24x = 2,979,364.74
  5. Step 5: Solve for x
    x = 2,979,364.74/2,453.24
  6. Step 6: Final answer
    x = 1,214.46

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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.