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Finding the Fourth Proportional to 1,336.09, 1,843.85 and 746.65

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Solution

The fourth proportional to 1,336.09, 1,843.85 and 746.65 is: 1,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.09 : 1,843.85 = 746.65 : x
  2. Step 2: Convert to fraction form
    1,336.09/1,843.85 = 746.65/x
  3. Step 3: Cross multiply
    1,336.09x = 1,843.85 × 746.65
  4. Step 4: Simplify right side
    1,336.09x = 1,376,706.87
  5. Step 5: Solve for x
    x = 1,376,706.87/1,336.09
  6. Step 6: Final answer
    x = 1,030.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.