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Finding the Fourth Proportional to 1,768.53, 2,651.53 and 830.95

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Solution

The fourth proportional to 1,768.53, 2,651.53 and 830.95 is: 1,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.53 : 2,651.53 = 830.95 : x
  2. Step 2: Convert to fraction form
    1,768.53/2,651.53 = 830.95/x
  3. Step 3: Cross multiply
    1,768.53x = 2,651.53 × 830.95
  4. Step 4: Simplify right side
    1,768.53x = 2,203,293.99
  5. Step 5: Solve for x
    x = 2,203,293.99/1,768.53
  6. Step 6: Final answer
    x = 1,245.83

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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.