Finding the Fourth Proportional to 317.19, 437.69 and 199.17
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Solution
The fourth proportional to 317.19, 437.69 and 199.17 is: 274.84
Step by Step Solution
- Step 1: Write the proportion equation
317.19 : 437.69 = 199.17 : x - Step 2: Convert to fraction form
317.19/437.69 = 199.17/x - Step 3: Cross multiply
317.19x = 437.69 × 199.17 - Step 4: Simplify right side
317.19x = 87,175.22 - Step 5: Solve for x
x = 87,175.22/317.19 - Step 6: Final answer
x = 274.84
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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.