Finding the Fourth Proportional to 252.18, 378.09 and 122.13
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Solution
The fourth proportional to 252.18, 378.09 and 122.13 is: 183.11
Step by Step Solution
- Step 1: Write the proportion equation
252.18 : 378.09 = 122.13 : x - Step 2: Convert to fraction form
252.18/378.09 = 122.13/x - Step 3: Cross multiply
252.18x = 378.09 × 122.13 - Step 4: Simplify right side
252.18x = 46,176.13 - Step 5: Solve for x
x = 46,176.13/252.18 - Step 6: Final answer
x = 183.11
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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.