Finding the Fourth Proportional to 108.08, 149.22 and 74.94
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Solution
The fourth proportional to 108.08, 149.22 and 74.94 is: 103.46
Step by Step Solution
- Step 1: Write the proportion equation
108.08 : 149.22 = 74.94 : x - Step 2: Convert to fraction form
108.08/149.22 = 74.94/x - Step 3: Cross multiply
108.08x = 149.22 × 74.94 - Step 4: Simplify right side
108.08x = 11,181.99 - Step 5: Solve for x
x = 11,181.99/108.08 - Step 6: Final answer
x = 103.46
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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.