Finding the Fourth Proportional to 252.13, 378.29 and 115.19
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Solution
The fourth proportional to 252.13, 378.29 and 115.19 is: 172.83
Step by Step Solution
- Step 1: Write the proportion equation
252.13 : 378.29 = 115.19 : x - Step 2: Convert to fraction form
252.13/378.29 = 115.19/x - Step 3: Cross multiply
252.13x = 378.29 × 115.19 - Step 4: Simplify right side
252.13x = 43,574.39 - Step 5: Solve for x
x = 43,574.39/252.13 - Step 6: Final answer
x = 172.83
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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.