Finding the Fourth Proportional to 290.97, 401.55 and 159.99
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Solution
The fourth proportional to 290.97, 401.55 and 159.99 is: 220.79
Step by Step Solution
- Step 1: Write the proportion equation
290.97 : 401.55 = 159.99 : x - Step 2: Convert to fraction form
290.97/401.55 = 159.99/x - Step 3: Cross multiply
290.97x = 401.55 × 159.99 - Step 4: Simplify right side
290.97x = 64,243.98 - Step 5: Solve for x
x = 64,243.98/290.97 - Step 6: Final answer
x = 220.79
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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.