Finding the Fourth Proportional to 108.04, 149.14 and 84.68
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Solution
The fourth proportional to 108.04, 149.14 and 84.68 is: 116.90
Step by Step Solution
- Step 1: Write the proportion equation
108.04 : 149.14 = 84.68 : x - Step 2: Convert to fraction form
108.04/149.14 = 84.68/x - Step 3: Cross multiply
108.04x = 149.14 × 84.68 - Step 4: Simplify right side
108.04x = 12,629.18 - Step 5: Solve for x
x = 12,629.18/108.04 - Step 6: Final answer
x = 116.90
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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.