Home / 1,296.03-1,942.97-515.55

Finding the Fourth Proportional to 1,296.03, 1,942.97 and 515.55

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Solution

The fourth proportional to 1,296.03, 1,942.97 and 515.55 is: 772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.03 : 1,942.97 = 515.55 : x
  2. Step 2: Convert to fraction form
    1,296.03/1,942.97 = 515.55/x
  3. Step 3: Cross multiply
    1,296.03x = 1,942.97 × 515.55
  4. Step 4: Simplify right side
    1,296.03x = 1,001,695.61
  5. Step 5: Solve for x
    x = 1,001,695.61/1,296.03
  6. Step 6: Final answer
    x = 772.90

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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.