Finding the Fourth Proportional to 286.12, 394.84 and 174.05
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Solution
The fourth proportional to 286.12, 394.84 and 174.05 is: 240.18
Step by Step Solution
- Step 1: Write the proportion equation
286.12 : 394.84 = 174.05 : x - Step 2: Convert to fraction form
286.12/394.84 = 174.05/x - Step 3: Cross multiply
286.12x = 394.84 × 174.05 - Step 4: Simplify right side
286.12x = 68,721.99 - Step 5: Solve for x
x = 68,721.99/286.12 - Step 6: Final answer
x = 240.18
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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.