Finding the Fourth Proportional to 170.35, 235.18 and 108.18
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Solution
The fourth proportional to 170.35, 235.18 and 108.18 is: 149.35
Step by Step Solution
- Step 1: Write the proportion equation
170.35 : 235.18 = 108.18 : x - Step 2: Convert to fraction form
170.35/235.18 = 108.18/x - Step 3: Cross multiply
170.35x = 235.18 × 108.18 - Step 4: Simplify right side
170.35x = 25,441.23 - Step 5: Solve for x
x = 25,441.23/170.35 - Step 6: Final answer
x = 149.35
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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.