Finding the Fourth Proportional to 249.99, 374.99 and 76.66
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Solution
The fourth proportional to 249.99, 374.99 and 76.66 is: 114.99
Step by Step Solution
- Step 1: Write the proportion equation
249.99 : 374.99 = 76.66 : x - Step 2: Convert to fraction form
249.99/374.99 = 76.66/x - Step 3: Cross multiply
249.99x = 374.99 × 76.66 - Step 4: Simplify right side
249.99x = 28,745.41 - Step 5: Solve for x
x = 28,745.41/249.99 - Step 6: Final answer
x = 114.99
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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.