Finding the Fourth Proportional to 317.21, 475.44 and 163.21
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Solution
The fourth proportional to 317.21, 475.44 and 163.21 is: 244.62
Step by Step Solution
- Step 1: Write the proportion equation
317.21 : 475.44 = 163.21 : x - Step 2: Convert to fraction form
317.21/475.44 = 163.21/x - Step 3: Cross multiply
317.21x = 475.44 × 163.21 - Step 4: Simplify right side
317.21x = 77,597.75 - Step 5: Solve for x
x = 77,597.75/317.21 - Step 6: Final answer
x = 244.62
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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.