Finding the Fourth Proportional to 66.75, 92.01 and 45.99
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Solution
The fourth proportional to 66.75, 92.01 and 45.99 is: 63.39
Step by Step Solution
- Step 1: Write the proportion equation
66.75 : 92.01 = 45.99 : x - Step 2: Convert to fraction form
66.75/92.01 = 45.99/x - Step 3: Cross multiply
66.75x = 92.01 × 45.99 - Step 4: Simplify right side
66.75x = 4,231.54 - Step 5: Solve for x
x = 4,231.54/66.75 - Step 6: Final answer
x = 63.39
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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.