Finding the Fourth Proportional to 438.05, 656.90 and 163.99
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Solution
The fourth proportional to 438.05, 656.90 and 163.99 is: 245.92
Step by Step Solution
- Step 1: Write the proportion equation
438.05 : 656.90 = 163.99 : x - Step 2: Convert to fraction form
438.05/656.90 = 163.99/x - Step 3: Cross multiply
438.05x = 656.90 × 163.99 - Step 4: Simplify right side
438.05x = 107,725.03 - Step 5: Solve for x
x = 107,725.03/438.05 - Step 6: Final answer
x = 245.92
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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.