Finding the Fourth Proportional to 170.91, 235.91 and 115.63
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Solution
The fourth proportional to 170.91, 235.91 and 115.63 is: 159.60
Step by Step Solution
- Step 1: Write the proportion equation
170.91 : 235.91 = 115.63 : x - Step 2: Convert to fraction form
170.91/235.91 = 115.63/x - Step 3: Cross multiply
170.91x = 235.91 × 115.63 - Step 4: Simplify right side
170.91x = 27,277.97 - Step 5: Solve for x
x = 27,277.97/170.91 - Step 6: Final answer
x = 159.60
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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.