Finding the Fourth Proportional to 438.07, 656.60 and 163.99
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Solution
The fourth proportional to 438.07, 656.60 and 163.99 is: 245.80
Step by Step Solution
- Step 1: Write the proportion equation
438.07 : 656.60 = 163.99 : x - Step 2: Convert to fraction form
438.07/656.60 = 163.99/x - Step 3: Cross multiply
438.07x = 656.60 × 163.99 - Step 4: Simplify right side
438.07x = 107,675.83 - Step 5: Solve for x
x = 107,675.83/438.07 - Step 6: Final answer
x = 245.80
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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.