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Finding the Fourth Proportional to 922.54, 1,382.60 and 677.92

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Solution

The fourth proportional to 922.54, 1,382.60 and 677.92 is: 1,015.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.54 : 1,382.60 = 677.92 : x
  2. Step 2: Convert to fraction form
    922.54/1,382.60 = 677.92/x
  3. Step 3: Cross multiply
    922.54x = 1,382.60 × 677.92
  4. Step 4: Simplify right side
    922.54x = 937,292.19
  5. Step 5: Solve for x
    x = 937,292.19/922.54
  6. Step 6: Final answer
    x = 1,015.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.