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Finding the Fourth Proportional to 1,469.26, 2,202.47 and 818.63

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Solution

The fourth proportional to 1,469.26, 2,202.47 and 818.63 is: 1,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.26 : 2,202.47 = 818.63 : x
  2. Step 2: Convert to fraction form
    1,469.26/2,202.47 = 818.63/x
  3. Step 3: Cross multiply
    1,469.26x = 2,202.47 × 818.63
  4. Step 4: Simplify right side
    1,469.26x = 1,803,008.02
  5. Step 5: Solve for x
    x = 1,803,008.02/1,469.26
  6. Step 6: Final answer
    x = 1,227.15

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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.