Finding the Fourth Proportional to 239.26, 358.93 and 76.91
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Solution
The fourth proportional to 239.26, 358.93 and 76.91 is: 115.37
Step by Step Solution
- Step 1: Write the proportion equation
239.26 : 358.93 = 76.91 : x - Step 2: Convert to fraction form
239.26/358.93 = 76.91/x - Step 3: Cross multiply
239.26x = 358.93 × 76.91 - Step 4: Simplify right side
239.26x = 27,603.85 - Step 5: Solve for x
x = 27,603.85/239.26 - Step 6: Final answer
x = 115.37
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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.