Finding the Fourth Proportional to 252.19, 378.21 and 98.08
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Solution
The fourth proportional to 252.19, 378.21 and 98.08 is: 147.09
Step by Step Solution
- Step 1: Write the proportion equation
252.19 : 378.21 = 98.08 : x - Step 2: Convert to fraction form
252.19/378.21 = 98.08/x - Step 3: Cross multiply
252.19x = 378.21 × 98.08 - Step 4: Simplify right side
252.19x = 37,094.84 - Step 5: Solve for x
x = 37,094.84/252.19 - Step 6: Final answer
x = 147.09
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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.