Finding the Fourth Proportional to 382.70, 528.08 and 216.92
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Solution
The fourth proportional to 382.70, 528.08 and 216.92 is: 299.32
Step by Step Solution
- Step 1: Write the proportion equation
382.70 : 528.08 = 216.92 : x - Step 2: Convert to fraction form
382.70/528.08 = 216.92/x - Step 3: Cross multiply
382.70x = 528.08 × 216.92 - Step 4: Simplify right side
382.70x = 114,551.11 - Step 5: Solve for x
x = 114,551.11/382.70 - Step 6: Final answer
x = 299.32
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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.