Finding the Fourth Proportional to 170.99, 235.67 and 138.23
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Solution
The fourth proportional to 170.99, 235.67 and 138.23 is: 190.52
Step by Step Solution
- Step 1: Write the proportion equation
170.99 : 235.67 = 138.23 : x - Step 2: Convert to fraction form
170.99/235.67 = 138.23/x - Step 3: Cross multiply
170.99x = 235.67 × 138.23 - Step 4: Simplify right side
170.99x = 32,575.49 - Step 5: Solve for x
x = 32,575.49/170.99 - Step 6: Final answer
x = 190.52
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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.