Finding the Fourth Proportional to 238.15, 357.27 and 84.09
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Solution
The fourth proportional to 238.15, 357.27 and 84.09 is: 126.15
Step by Step Solution
- Step 1: Write the proportion equation
238.15 : 357.27 = 84.09 : x - Step 2: Convert to fraction form
238.15/357.27 = 84.09/x - Step 3: Cross multiply
238.15x = 357.27 × 84.09 - Step 4: Simplify right side
238.15x = 30,042.83 - Step 5: Solve for x
x = 30,042.83/238.15 - Step 6: Final answer
x = 126.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.