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Finding the Fourth Proportional to 1,523.80, 2,286.62 and 549.80

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Solution

The fourth proportional to 1,523.80, 2,286.62 and 549.80 is: 825.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.80 : 2,286.62 = 549.80 : x
  2. Step 2: Convert to fraction form
    1,523.80/2,286.62 = 549.80/x
  3. Step 3: Cross multiply
    1,523.80x = 2,286.62 × 549.80
  4. Step 4: Simplify right side
    1,523.80x = 1,257,183.68
  5. Step 5: Solve for x
    x = 1,257,183.68/1,523.80
  6. Step 6: Final answer
    x = 825.03

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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.