Finding the Fourth Proportional to 108.43, 162.69 and 65.18
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Solution
The fourth proportional to 108.43, 162.69 and 65.18 is: 97.80
Step by Step Solution
- Step 1: Write the proportion equation
108.43 : 162.69 = 65.18 : x - Step 2: Convert to fraction form
108.43/162.69 = 65.18/x - Step 3: Cross multiply
108.43x = 162.69 × 65.18 - Step 4: Simplify right side
108.43x = 10,604.13 - Step 5: Solve for x
x = 10,604.13/108.43 - Step 6: Final answer
x = 97.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.