Finding the Fourth Proportional to 308.35, 425.72 and 238.28
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Solution
The fourth proportional to 308.35, 425.72 and 238.28 is: 328.99
Step by Step Solution
- Step 1: Write the proportion equation
308.35 : 425.72 = 238.28 : x - Step 2: Convert to fraction form
308.35/425.72 = 238.28/x - Step 3: Cross multiply
308.35x = 425.72 × 238.28 - Step 4: Simplify right side
308.35x = 101,442.22 - Step 5: Solve for x
x = 101,442.22/308.35 - Step 6: Final answer
x = 328.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.