Finding the Fourth Proportional to 239.36, 358.98 and 77.00
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Solution
The fourth proportional to 239.36, 358.98 and 77.00 is: 115.48
Step by Step Solution
- Step 1: Write the proportion equation
239.36 : 358.98 = 77.00 : x - Step 2: Convert to fraction form
239.36/358.98 = 77.00/x - Step 3: Cross multiply
239.36x = 358.98 × 77.00 - Step 4: Simplify right side
239.36x = 27,641.83 - Step 5: Solve for x
x = 27,641.83/239.36 - Step 6: Final answer
x = 115.48
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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.