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Finding the Fourth Proportional to 894.12, 1,232.94 and 697.28

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Solution

The fourth proportional to 894.12, 1,232.94 and 697.28 is: 961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.12 : 1,232.94 = 697.28 : x
  2. Step 2: Convert to fraction form
    894.12/1,232.94 = 697.28/x
  3. Step 3: Cross multiply
    894.12x = 1,232.94 × 697.28
  4. Step 4: Simplify right side
    894.12x = 859,704.40
  5. Step 5: Solve for x
    x = 859,704.40/894.12
  6. Step 6: Final answer
    x = 961.51

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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.