Finding the Fourth Proportional to 132.81, 199.26 and 71.99
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Solution
The fourth proportional to 132.81, 199.26 and 71.99 is: 108.00
Step by Step Solution
- Step 1: Write the proportion equation
132.81 : 199.26 = 71.99 : x - Step 2: Convert to fraction form
132.81/199.26 = 71.99/x - Step 3: Cross multiply
132.81x = 199.26 × 71.99 - Step 4: Simplify right side
132.81x = 14,344.48 - Step 5: Solve for x
x = 14,344.48/132.81 - Step 6: Final answer
x = 108.00
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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.