Finding the Fourth Proportional to 382.91, 528.36 and 243.05
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Solution
The fourth proportional to 382.91, 528.36 and 243.05 is: 335.37
Step by Step Solution
- Step 1: Write the proportion equation
382.91 : 528.36 = 243.05 : x - Step 2: Convert to fraction form
382.91/528.36 = 243.05/x - Step 3: Cross multiply
382.91x = 528.36 × 243.05 - Step 4: Simplify right side
382.91x = 128,415.26 - Step 5: Solve for x
x = 128,415.26/382.91 - Step 6: Final answer
x = 335.37
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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.