Finding the Fourth Proportional to 173.28, 239.07 and 107.79
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Solution
The fourth proportional to 173.28, 239.07 and 107.79 is: 148.72
Step by Step Solution
- Step 1: Write the proportion equation
173.28 : 239.07 = 107.79 : x - Step 2: Convert to fraction form
173.28/239.07 = 107.79/x - Step 3: Cross multiply
173.28x = 239.07 × 107.79 - Step 4: Simplify right side
173.28x = 25,769.36 - Step 5: Solve for x
x = 25,769.36/173.28 - Step 6: Final answer
x = 148.72
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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.