Finding the Fourth Proportional to 290.19, 435.28 and 119.19
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Solution
The fourth proportional to 290.19, 435.28 and 119.19 is: 178.78
Step by Step Solution
- Step 1: Write the proportion equation
290.19 : 435.28 = 119.19 : x - Step 2: Convert to fraction form
290.19/435.28 = 119.19/x - Step 3: Cross multiply
290.19x = 435.28 × 119.19 - Step 4: Simplify right side
290.19x = 51,880.23 - Step 5: Solve for x
x = 51,880.23/290.19 - Step 6: Final answer
x = 178.78
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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.