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Finding the Fourth Proportional to 759.06, 1,138.77 and 699.06

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Solution

The fourth proportional to 759.06, 1,138.77 and 699.06 is: 1,048.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.06 : 1,138.77 = 699.06 : x
  2. Step 2: Convert to fraction form
    759.06/1,138.77 = 699.06/x
  3. Step 3: Cross multiply
    759.06x = 1,138.77 × 699.06
  4. Step 4: Simplify right side
    759.06x = 796,068.56
  5. Step 5: Solve for x
    x = 796,068.56/759.06
  6. Step 6: Final answer
    x = 1,048.76

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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.