Finding the Fourth Proportional to 382.68, 528.19 and 216.99
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Solution
The fourth proportional to 382.68, 528.19 and 216.99 is: 299.50
Step by Step Solution
- Step 1: Write the proportion equation
382.68 : 528.19 = 216.99 : x - Step 2: Convert to fraction form
382.68/528.19 = 216.99/x - Step 3: Cross multiply
382.68x = 528.19 × 216.99 - Step 4: Simplify right side
382.68x = 114,609.76 - Step 5: Solve for x
x = 114,609.76/382.68 - Step 6: Final answer
x = 299.50
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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.