Finding the Fourth Proportional to 108.17, 161.88 and 69.68
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Solution
The fourth proportional to 108.17, 161.88 and 69.68 is: 104.28
Step by Step Solution
- Step 1: Write the proportion equation
108.17 : 161.88 = 69.68 : x - Step 2: Convert to fraction form
108.17/161.88 = 69.68/x - Step 3: Cross multiply
108.17x = 161.88 × 69.68 - Step 4: Simplify right side
108.17x = 11,278.99 - Step 5: Solve for x
x = 11,278.99/108.17 - Step 6: Final answer
x = 104.28
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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.