Finding the Fourth Proportional to 113.79, 170.67 and 36.75
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Solution
The fourth proportional to 113.79, 170.67 and 36.75 is: 55.12
Step by Step Solution
- Step 1: Write the proportion equation
113.79 : 170.67 = 36.75 : x - Step 2: Convert to fraction form
113.79/170.67 = 36.75/x - Step 3: Cross multiply
113.79x = 170.67 × 36.75 - Step 4: Simplify right side
113.79x = 6,272.12 - Step 5: Solve for x
x = 6,272.12/113.79 - Step 6: Final answer
x = 55.12
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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.