Finding the Fourth Proportional to 108.08, 149.09 and 84.73
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Solution
The fourth proportional to 108.08, 149.09 and 84.73 is: 116.88
Step by Step Solution
- Step 1: Write the proportion equation
108.08 : 149.09 = 84.73 : x - Step 2: Convert to fraction form
108.08/149.09 = 84.73/x - Step 3: Cross multiply
108.08x = 149.09 × 84.73 - Step 4: Simplify right side
108.08x = 12,632.98 - Step 5: Solve for x
x = 12,632.98/108.08 - Step 6: Final answer
x = 116.88
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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.