Finding the Fourth Proportional to 113.58, 170.08 and 84.62
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Solution
The fourth proportional to 113.58, 170.08 and 84.62 is: 126.71
Step by Step Solution
- Step 1: Write the proportion equation
113.58 : 170.08 = 84.62 : x - Step 2: Convert to fraction form
113.58/170.08 = 84.62/x - Step 3: Cross multiply
113.58x = 170.08 × 84.62 - Step 4: Simplify right side
113.58x = 14,392.17 - Step 5: Solve for x
x = 14,392.17/113.58 - Step 6: Final answer
x = 126.71
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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.