Finding the Fourth Proportional to 328.36, 453.38 and 217.99
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Solution
The fourth proportional to 328.36, 453.38 and 217.99 is: 300.99
Step by Step Solution
- Step 1: Write the proportion equation
328.36 : 453.38 = 217.99 : x - Step 2: Convert to fraction form
328.36/453.38 = 217.99/x - Step 3: Cross multiply
328.36x = 453.38 × 217.99 - Step 4: Simplify right side
328.36x = 98,832.31 - Step 5: Solve for x
x = 98,832.31/328.36 - Step 6: Final answer
x = 300.99
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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.