Finding the Fourth Proportional to 252.30, 378.53 and 115.23
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Solution
The fourth proportional to 252.30, 378.53 and 115.23 is: 172.88
Step by Step Solution
- Step 1: Write the proportion equation
252.30 : 378.53 = 115.23 : x - Step 2: Convert to fraction form
252.30/378.53 = 115.23/x - Step 3: Cross multiply
252.30x = 378.53 × 115.23 - Step 4: Simplify right side
252.30x = 43,618.01 - Step 5: Solve for x
x = 43,618.01/252.30 - Step 6: Final answer
x = 172.88
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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.