Finding the Fourth Proportional to 252.96, 378.96 and 124.80
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Solution
The fourth proportional to 252.96, 378.96 and 124.80 is: 186.96
Step by Step Solution
- Step 1: Write the proportion equation
252.96 : 378.96 = 124.80 : x - Step 2: Convert to fraction form
252.96/378.96 = 124.80/x - Step 3: Cross multiply
252.96x = 378.96 × 124.80 - Step 4: Simplify right side
252.96x = 47,294.21 - Step 5: Solve for x
x = 47,294.21/252.96 - Step 6: Final answer
x = 186.96
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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.