Finding the Fourth Proportional to 327.58, 490.99 and 121.99
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Solution
The fourth proportional to 327.58, 490.99 and 121.99 is: 182.84
Step by Step Solution
- Step 1: Write the proportion equation
327.58 : 490.99 = 121.99 : x - Step 2: Convert to fraction form
327.58/490.99 = 121.99/x - Step 3: Cross multiply
327.58x = 490.99 × 121.99 - Step 4: Simplify right side
327.58x = 59,895.87 - Step 5: Solve for x
x = 59,895.87/327.58 - Step 6: Final answer
x = 182.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.