Finding the Fourth Proportional to 239.09, 358.49 and 76.68
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Solution
The fourth proportional to 239.09, 358.49 and 76.68 is: 114.97
Step by Step Solution
- Step 1: Write the proportion equation
239.09 : 358.49 = 76.68 : x - Step 2: Convert to fraction form
239.09/358.49 = 76.68/x - Step 3: Cross multiply
239.09x = 358.49 × 76.68 - Step 4: Simplify right side
239.09x = 27,488.63 - Step 5: Solve for x
x = 27,488.63/239.09 - Step 6: Final answer
x = 114.97
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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.