Finding the Fourth Proportional to 286.97, 396.09 and 170.60
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Solution
The fourth proportional to 286.97, 396.09 and 170.60 is: 235.47
Step by Step Solution
- Step 1: Write the proportion equation
286.97 : 396.09 = 170.60 : x - Step 2: Convert to fraction form
286.97/396.09 = 170.60/x - Step 3: Cross multiply
286.97x = 396.09 × 170.60 - Step 4: Simplify right side
286.97x = 67,570.97 - Step 5: Solve for x
x = 67,570.97/286.97 - Step 6: Final answer
x = 235.47
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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.