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Finding the Fourth Proportional to 894.93, 1,236.11 and 634.11

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Solution

The fourth proportional to 894.93, 1,236.11 and 634.11 is: 875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.93 : 1,236.11 = 634.11 : x
  2. Step 2: Convert to fraction form
    894.93/1,236.11 = 634.11/x
  3. Step 3: Cross multiply
    894.93x = 1,236.11 × 634.11
  4. Step 4: Simplify right side
    894.93x = 783,826.54
  5. Step 5: Solve for x
    x = 783,826.54/894.93
  6. Step 6: Final answer
    x = 875.85

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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.