Finding the Fourth Proportional to 170.40, 235.08 and 112.08
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Solution
The fourth proportional to 170.40, 235.08 and 112.08 is: 154.62
Step by Step Solution
- Step 1: Write the proportion equation
170.40 : 235.08 = 112.08 : x - Step 2: Convert to fraction form
170.40/235.08 = 112.08/x - Step 3: Cross multiply
170.40x = 235.08 × 112.08 - Step 4: Simplify right side
170.40x = 26,347.77 - Step 5: Solve for x
x = 26,347.77/170.40 - Step 6: Final answer
x = 154.62
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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.