Finding the Fourth Proportional to 212.23, 292.97 and 124.91
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Solution
The fourth proportional to 212.23, 292.97 and 124.91 is: 172.42
Step by Step Solution
- Step 1: Write the proportion equation
212.23 : 292.97 = 124.91 : x - Step 2: Convert to fraction form
212.23/292.97 = 124.91/x - Step 3: Cross multiply
212.23x = 292.97 × 124.91 - Step 4: Simplify right side
212.23x = 36,593.42 - Step 5: Solve for x
x = 36,593.42/212.23 - Step 6: Final answer
x = 172.42
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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.