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Finding the Fourth Proportional to 894.32, 1,233.44 and 789.48

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Solution

The fourth proportional to 894.32, 1,233.44 and 789.48 is: 1,088.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.32 : 1,233.44 = 789.48 : x
  2. Step 2: Convert to fraction form
    894.32/1,233.44 = 789.48/x
  3. Step 3: Cross multiply
    894.32x = 1,233.44 × 789.48
  4. Step 4: Simplify right side
    894.32x = 973,776.21
  5. Step 5: Solve for x
    x = 973,776.21/894.32
  6. Step 6: Final answer
    x = 1,088.85

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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.