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Finding the Fourth Proportional to 804.92, 1,109.75 and 694.17

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Solution

The fourth proportional to 804.92, 1,109.75 and 694.17 is: 957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.92 : 1,109.75 = 694.17 : x
  2. Step 2: Convert to fraction form
    804.92/1,109.75 = 694.17/x
  3. Step 3: Cross multiply
    804.92x = 1,109.75 × 694.17
  4. Step 4: Simplify right side
    804.92x = 770,351.69
  5. Step 5: Solve for x
    x = 770,351.69/804.92
  6. Step 6: Final answer
    x = 957.06

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1.5x scale

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.