Finding the Fourth Proportional to 203.78, 281.34 and 126.26
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Solution
The fourth proportional to 203.78, 281.34 and 126.26 is: 174.32
Step by Step Solution
- Step 1: Write the proportion equation
203.78 : 281.34 = 126.26 : x - Step 2: Convert to fraction form
203.78/281.34 = 126.26/x - Step 3: Cross multiply
203.78x = 281.34 × 126.26 - Step 4: Simplify right side
203.78x = 35,521.99 - Step 5: Solve for x
x = 35,521.99/203.78 - Step 6: Final answer
x = 174.32
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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.