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Finding the Fourth Proportional to 837.69, 1,260.93 and 712.41

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Solution

The fourth proportional to 837.69, 1,260.93 and 712.41 is: 1,072.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.69 : 1,260.93 = 712.41 : x
  2. Step 2: Convert to fraction form
    837.69/1,260.93 = 712.41/x
  3. Step 3: Cross multiply
    837.69x = 1,260.93 × 712.41
  4. Step 4: Simplify right side
    837.69x = 898,299.14
  5. Step 5: Solve for x
    x = 898,299.14/837.69
  6. Step 6: Final answer
    x = 1,072.35

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.