Finding the Fourth Proportional to 212.42, 317.99 and 192.14
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Solution
The fourth proportional to 212.42, 317.99 and 192.14 is: 287.63
Step by Step Solution
- Step 1: Write the proportion equation
212.42 : 317.99 = 192.14 : x - Step 2: Convert to fraction form
212.42/317.99 = 192.14/x - Step 3: Cross multiply
212.42x = 317.99 × 192.14 - Step 4: Simplify right side
212.42x = 61,098.60 - Step 5: Solve for x
x = 61,098.60/212.42 - Step 6: Final answer
x = 287.63
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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.