Finding the Fourth Proportional to 252.15, 378.11 and 115.26
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Solution
The fourth proportional to 252.15, 378.11 and 115.26 is: 172.84
Step by Step Solution
- Step 1: Write the proportion equation
252.15 : 378.11 = 115.26 : x - Step 2: Convert to fraction form
252.15/378.11 = 115.26/x - Step 3: Cross multiply
252.15x = 378.11 × 115.26 - Step 4: Simplify right side
252.15x = 43,580.38 - Step 5: Solve for x
x = 43,580.38/252.15 - Step 6: Final answer
x = 172.84
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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.