Finding the Fourth Proportional to 286.26, 394.95 and 161.90
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Solution
The fourth proportional to 286.26, 394.95 and 161.90 is: 223.37
Step by Step Solution
- Step 1: Write the proportion equation
286.26 : 394.95 = 161.90 : x - Step 2: Convert to fraction form
286.26/394.95 = 161.90/x - Step 3: Cross multiply
286.26x = 394.95 × 161.90 - Step 4: Simplify right side
286.26x = 63,942.41 - Step 5: Solve for x
x = 63,942.41/286.26 - Step 6: Final answer
x = 223.37
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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.