Finding the Fourth Proportional to 286.21, 394.97 and 168.19
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Solution
The fourth proportional to 286.21, 394.97 and 168.19 is: 232.09
Step by Step Solution
- Step 1: Write the proportion equation
286.21 : 394.97 = 168.19 : x - Step 2: Convert to fraction form
286.21/394.97 = 168.19/x - Step 3: Cross multiply
286.21x = 394.97 × 168.19 - Step 4: Simplify right side
286.21x = 66,428.18 - Step 5: Solve for x
x = 66,428.18/286.21 - Step 6: Final answer
x = 232.09
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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.