Finding the Fourth Proportional to 181.30, 249.99 and 154.99
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Solution
The fourth proportional to 181.30, 249.99 and 154.99 is: 213.71
Step by Step Solution
- Step 1: Write the proportion equation
181.30 : 249.99 = 154.99 : x - Step 2: Convert to fraction form
181.30/249.99 = 154.99/x - Step 3: Cross multiply
181.30x = 249.99 × 154.99 - Step 4: Simplify right side
181.30x = 38,745.95 - Step 5: Solve for x
x = 38,745.95/181.30 - Step 6: Final answer
x = 213.71
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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.