Finding the Fourth Proportional to 163.99, 245.99 and 66.49
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Solution
The fourth proportional to 163.99, 245.99 and 66.49 is: 99.74
Step by Step Solution
- Step 1: Write the proportion equation
163.99 : 245.99 = 66.49 : x - Step 2: Convert to fraction form
163.99/245.99 = 66.49/x - Step 3: Cross multiply
163.99x = 245.99 × 66.49 - Step 4: Simplify right side
163.99x = 16,356.44 - Step 5: Solve for x
x = 16,356.44/163.99 - Step 6: Final answer
x = 99.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.