Finding the Fourth Proportional to 211.73, 292.21 and 207.68
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Solution
The fourth proportional to 211.73, 292.21 and 207.68 is: 286.62
Step by Step Solution
- Step 1: Write the proportion equation
211.73 : 292.21 = 207.68 : x - Step 2: Convert to fraction form
211.73/292.21 = 207.68/x - Step 3: Cross multiply
211.73x = 292.21 × 207.68 - Step 4: Simplify right side
211.73x = 60,684.19 - Step 5: Solve for x
x = 60,684.19/211.73 - Step 6: Final answer
x = 286.62
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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.