Finding the Fourth Proportional to 252.74, 378.68 and 161.30
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Solution
The fourth proportional to 252.74, 378.68 and 161.30 is: 241.68
Step by Step Solution
- Step 1: Write the proportion equation
252.74 : 378.68 = 161.30 : x - Step 2: Convert to fraction form
252.74/378.68 = 161.30/x - Step 3: Cross multiply
252.74x = 378.68 × 161.30 - Step 4: Simplify right side
252.74x = 61,081.08 - Step 5: Solve for x
x = 61,081.08/252.74 - Step 6: Final answer
x = 241.68
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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.