Finding the Fourth Proportional to 252.24, 378.42 and 98.19
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Solution
The fourth proportional to 252.24, 378.42 and 98.19 is: 147.31
Step by Step Solution
- Step 1: Write the proportion equation
252.24 : 378.42 = 98.19 : x - Step 2: Convert to fraction form
252.24/378.42 = 98.19/x - Step 3: Cross multiply
252.24x = 378.42 × 98.19 - Step 4: Simplify right side
252.24x = 37,157.06 - Step 5: Solve for x
x = 37,157.06/252.24 - Step 6: Final answer
x = 147.31
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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.