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Finding the Fourth Proportional to 1,394.25, 1,923.93 and 804.98

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Solution

The fourth proportional to 1,394.25, 1,923.93 and 804.98 is: 1,110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.25 : 1,923.93 = 804.98 : x
  2. Step 2: Convert to fraction form
    1,394.25/1,923.93 = 804.98/x
  3. Step 3: Cross multiply
    1,394.25x = 1,923.93 × 804.98
  4. Step 4: Simplify right side
    1,394.25x = 1,548,715.55
  5. Step 5: Solve for x
    x = 1,548,715.55/1,394.25
  6. Step 6: Final answer
    x = 1,110.79

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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.