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Finding the Fourth Proportional to 1,409.36, 1,945.19 and 849.92

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Solution

The fourth proportional to 1,409.36, 1,945.19 and 849.92 is: 1,173.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.36 : 1,945.19 = 849.92 : x
  2. Step 2: Convert to fraction form
    1,409.36/1,945.19 = 849.92/x
  3. Step 3: Cross multiply
    1,409.36x = 1,945.19 × 849.92
  4. Step 4: Simplify right side
    1,409.36x = 1,653,241.91
  5. Step 5: Solve for x
    x = 1,653,241.91/1,409.36
  6. Step 6: Final answer
    x = 1,173.05

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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.