Finding the Fourth Proportional to 379.75, 524.08 and 213.99
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Solution
The fourth proportional to 379.75, 524.08 and 213.99 is: 295.32
Step by Step Solution
- Step 1: Write the proportion equation
379.75 : 524.08 = 213.99 : x - Step 2: Convert to fraction form
379.75/524.08 = 213.99/x - Step 3: Cross multiply
379.75x = 524.08 × 213.99 - Step 4: Simplify right side
379.75x = 112,149.43 - Step 5: Solve for x
x = 112,149.43/379.75 - Step 6: Final answer
x = 295.32
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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.