Finding the Fourth Proportional to 181.08, 249.84 and 115.68
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Solution
The fourth proportional to 181.08, 249.84 and 115.68 is: 159.61
Step by Step Solution
- Step 1: Write the proportion equation
181.08 : 249.84 = 115.68 : x - Step 2: Convert to fraction form
181.08/249.84 = 115.68/x - Step 3: Cross multiply
181.08x = 249.84 × 115.68 - Step 4: Simplify right side
181.08x = 28,901.49 - Step 5: Solve for x
x = 28,901.49/181.08 - Step 6: Final answer
x = 159.61
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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.