Finding the Fourth Proportional to 212.25, 317.96 and 201.18
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Solution
The fourth proportional to 212.25, 317.96 and 201.18 is: 301.38
Step by Step Solution
- Step 1: Write the proportion equation
212.25 : 317.96 = 201.18 : x - Step 2: Convert to fraction form
212.25/317.96 = 201.18/x - Step 3: Cross multiply
212.25x = 317.96 × 201.18 - Step 4: Simplify right side
212.25x = 63,968.13 - Step 5: Solve for x
x = 63,968.13/212.25 - Step 6: Final answer
x = 301.38
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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.