Finding the Fourth Proportional to 252.27, 378.21 and 115.14
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Solution
The fourth proportional to 252.27, 378.21 and 115.14 is: 172.62
Step by Step Solution
- Step 1: Write the proportion equation
252.27 : 378.21 = 115.14 : x - Step 2: Convert to fraction form
252.27/378.21 = 115.14/x - Step 3: Cross multiply
252.27x = 378.21 × 115.14 - Step 4: Simplify right side
252.27x = 43,547.10 - Step 5: Solve for x
x = 43,547.10/252.27 - Step 6: Final answer
x = 172.62
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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.