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Finding the Fourth Proportional to 894.13, 1,228.69 and 746.50

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Solution

The fourth proportional to 894.13, 1,228.69 and 746.50 is: 1,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.13 : 1,228.69 = 746.50 : x
  2. Step 2: Convert to fraction form
    894.13/1,228.69 = 746.50/x
  3. Step 3: Cross multiply
    894.13x = 1,228.69 × 746.50
  4. Step 4: Simplify right side
    894.13x = 917,217.09
  5. Step 5: Solve for x
    x = 917,217.09/894.13
  6. Step 6: Final answer
    x = 1,025.82

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.