Finding the Fourth Proportional to 252.39, 378.32 and 115.23
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Solution
The fourth proportional to 252.39, 378.32 and 115.23 is: 172.72
Step by Step Solution
- Step 1: Write the proportion equation
252.39 : 378.32 = 115.23 : x - Step 2: Convert to fraction form
252.39/378.32 = 115.23/x - Step 3: Cross multiply
252.39x = 378.32 × 115.23 - Step 4: Simplify right side
252.39x = 43,593.24 - Step 5: Solve for x
x = 43,593.24/252.39 - Step 6: Final answer
x = 172.72
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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.