Finding the Fourth Proportional to 173.21, 239.08 and 107.68
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Solution
The fourth proportional to 173.21, 239.08 and 107.68 is: 148.63
Step by Step Solution
- Step 1: Write the proportion equation
173.21 : 239.08 = 107.68 : x - Step 2: Convert to fraction form
173.21/239.08 = 107.68/x - Step 3: Cross multiply
173.21x = 239.08 × 107.68 - Step 4: Simplify right side
173.21x = 25,744.13 - Step 5: Solve for x
x = 25,744.13/173.21 - Step 6: Final answer
x = 148.63
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.