Finding the Fourth Proportional to 281.29, 421.84 and 118.99
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Solution
The fourth proportional to 281.29, 421.84 and 118.99 is: 178.44
Step by Step Solution
- Step 1: Write the proportion equation
281.29 : 421.84 = 118.99 : x - Step 2: Convert to fraction form
281.29/421.84 = 118.99/x - Step 3: Cross multiply
281.29x = 421.84 × 118.99 - Step 4: Simplify right side
281.29x = 50,193.39 - Step 5: Solve for x
x = 50,193.39/281.29 - Step 6: Final answer
x = 178.44
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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.