Finding the Fourth Proportional to 170.75, 235.74 and 112.63
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Solution
The fourth proportional to 170.75, 235.74 and 112.63 is: 155.50
Step by Step Solution
- Step 1: Write the proportion equation
170.75 : 235.74 = 112.63 : x - Step 2: Convert to fraction form
170.75/235.74 = 112.63/x - Step 3: Cross multiply
170.75x = 235.74 × 112.63 - Step 4: Simplify right side
170.75x = 26,551.40 - Step 5: Solve for x
x = 26,551.40/170.75 - Step 6: Final answer
x = 155.50
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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.