Finding the Fourth Proportional to 170.97, 235.99 and 121.99
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Solution
The fourth proportional to 170.97, 235.99 and 121.99 is: 168.38
Step by Step Solution
- Step 1: Write the proportion equation
170.97 : 235.99 = 121.99 : x - Step 2: Convert to fraction form
170.97/235.99 = 121.99/x - Step 3: Cross multiply
170.97x = 235.99 × 121.99 - Step 4: Simplify right side
170.97x = 28,788.42 - Step 5: Solve for x
x = 28,788.42/170.97 - Step 6: Final answer
x = 168.38
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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.