Finding the Fourth Proportional to 379.08, 523.08 and 221.67
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Solution
The fourth proportional to 379.08, 523.08 and 221.67 is: 305.88
Step by Step Solution
- Step 1: Write the proportion equation
379.08 : 523.08 = 221.67 : x - Step 2: Convert to fraction form
379.08/523.08 = 221.67/x - Step 3: Cross multiply
379.08x = 523.08 × 221.67 - Step 4: Simplify right side
379.08x = 115,951.14 - Step 5: Solve for x
x = 115,951.14/379.08 - Step 6: Final answer
x = 305.88
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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.