Finding the Fourth Proportional to 317.21, 437.69 and 177.32
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Solution
The fourth proportional to 317.21, 437.69 and 177.32 is: 244.67
Step by Step Solution
- Step 1: Write the proportion equation
317.21 : 437.69 = 177.32 : x - Step 2: Convert to fraction form
317.21/437.69 = 177.32/x - Step 3: Cross multiply
317.21x = 437.69 × 177.32 - Step 4: Simplify right side
317.21x = 77,611.84 - Step 5: Solve for x
x = 77,611.84/317.21 - Step 6: Final answer
x = 244.67
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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.