Finding the Fourth Proportional to 68.66, 102.99 and 28.08
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Solution
The fourth proportional to 68.66, 102.99 and 28.08 is: 42.12
Step by Step Solution
- Step 1: Write the proportion equation
68.66 : 102.99 = 28.08 : x - Step 2: Convert to fraction form
68.66/102.99 = 28.08/x - Step 3: Cross multiply
68.66x = 102.99 × 28.08 - Step 4: Simplify right side
68.66x = 2,891.91 - Step 5: Solve for x
x = 2,891.91/68.66 - Step 6: Final answer
x = 42.12
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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.