Finding the Fourth Proportional to 290.11, 435.35 and 107.66
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Solution
The fourth proportional to 290.11, 435.35 and 107.66 is: 161.56
Step by Step Solution
- Step 1: Write the proportion equation
290.11 : 435.35 = 107.66 : x - Step 2: Convert to fraction form
290.11/435.35 = 107.66/x - Step 3: Cross multiply
290.11x = 435.35 × 107.66 - Step 4: Simplify right side
290.11x = 46,869.24 - Step 5: Solve for x
x = 46,869.24/290.11 - Step 6: Final answer
x = 161.56
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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.