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Finding the Fourth Proportional to 1,771.67, 2,658.12 and 676.20

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Solution

The fourth proportional to 1,771.67, 2,658.12 and 676.20 is: 1,014.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.67 : 2,658.12 = 676.20 : x
  2. Step 2: Convert to fraction form
    1,771.67/2,658.12 = 676.20/x
  3. Step 3: Cross multiply
    1,771.67x = 2,658.12 × 676.20
  4. Step 4: Simplify right side
    1,771.67x = 1,797,413.22
  5. Step 5: Solve for x
    x = 1,797,413.22/1,771.67
  6. Step 6: Final answer
    x = 1,014.53

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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.