Finding the Fourth Proportional to 311.99, 467.99 and 254.14
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Solution
The fourth proportional to 311.99, 467.99 and 254.14 is: 381.21
Step by Step Solution
- Step 1: Write the proportion equation
311.99 : 467.99 = 254.14 : x - Step 2: Convert to fraction form
311.99/467.99 = 254.14/x - Step 3: Cross multiply
311.99x = 467.99 × 254.14 - Step 4: Simplify right side
311.99x = 118,934.98 - Step 5: Solve for x
x = 118,934.98/311.99 - Step 6: Final answer
x = 381.21
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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.