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Finding the Fourth Proportional to 1,106.26, 1,657.56 and 694.37

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Solution

The fourth proportional to 1,106.26, 1,657.56 and 694.37 is: 1,040.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.26 : 1,657.56 = 694.37 : x
  2. Step 2: Convert to fraction form
    1,106.26/1,657.56 = 694.37/x
  3. Step 3: Cross multiply
    1,106.26x = 1,657.56 × 694.37
  4. Step 4: Simplify right side
    1,106.26x = 1,150,959.94
  5. Step 5: Solve for x
    x = 1,150,959.94/1,106.26
  6. Step 6: Final answer
    x = 1,040.41

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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.