Finding the Fourth Proportional to 352.92, 486.99 and 220.20
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Solution
The fourth proportional to 352.92, 486.99 and 220.20 is: 303.85
Step by Step Solution
- Step 1: Write the proportion equation
352.92 : 486.99 = 220.20 : x - Step 2: Convert to fraction form
352.92/486.99 = 220.20/x - Step 3: Cross multiply
352.92x = 486.99 × 220.20 - Step 4: Simplify right side
352.92x = 107,235.20 - Step 5: Solve for x
x = 107,235.20/352.92 - Step 6: Final answer
x = 303.85
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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.