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Finding the Fourth Proportional to 1,375.62, 2,063.44 and 349.62

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Solution

The fourth proportional to 1,375.62, 2,063.44 and 349.62 is: 524.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.62 : 2,063.44 = 349.62 : x
  2. Step 2: Convert to fraction form
    1,375.62/2,063.44 = 349.62/x
  3. Step 3: Cross multiply
    1,375.62x = 2,063.44 × 349.62
  4. Step 4: Simplify right side
    1,375.62x = 721,419.89
  5. Step 5: Solve for x
    x = 721,419.89/1,375.62
  6. Step 6: Final answer
    x = 524.43

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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.