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Finding the Fourth Proportional to 1,375.41, 2,063.15 and 509.73

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Solution

The fourth proportional to 1,375.41, 2,063.15 and 509.73 is: 764.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.41 : 2,063.15 = 509.73 : x
  2. Step 2: Convert to fraction form
    1,375.41/2,063.15 = 509.73/x
  3. Step 3: Cross multiply
    1,375.41x = 2,063.15 × 509.73
  4. Step 4: Simplify right side
    1,375.41x = 1,051,646.90
  5. Step 5: Solve for x
    x = 1,051,646.90/1,375.41
  6. Step 6: Final answer
    x = 764.61

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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.