Finding the Fourth Proportional to 252.18, 378.36 and 115.29
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Solution
The fourth proportional to 252.18, 378.36 and 115.29 is: 172.98
Step by Step Solution
- Step 1: Write the proportion equation
252.18 : 378.36 = 115.29 : x - Step 2: Convert to fraction form
252.18/378.36 = 115.29/x - Step 3: Cross multiply
252.18x = 378.36 × 115.29 - Step 4: Simplify right side
252.18x = 43,621.12 - Step 5: Solve for x
x = 43,621.12/252.18 - Step 6: Final answer
x = 172.98
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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.