Finding the Fourth Proportional to 239.36, 358.81 and 115.90
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Solution
The fourth proportional to 239.36, 358.81 and 115.90 is: 173.74
Step by Step Solution
- Step 1: Write the proportion equation
239.36 : 358.81 = 115.90 : x - Step 2: Convert to fraction form
239.36/358.81 = 115.90/x - Step 3: Cross multiply
239.36x = 358.81 × 115.90 - Step 4: Simplify right side
239.36x = 41,586.08 - Step 5: Solve for x
x = 41,586.08/239.36 - Step 6: Final answer
x = 173.74
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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.