Finding the Fourth Proportional to 79.36, 118.99 and 28.00
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Solution
The fourth proportional to 79.36, 118.99 and 28.00 is: 41.98
Step by Step Solution
- Step 1: Write the proportion equation
79.36 : 118.99 = 28.00 : x - Step 2: Convert to fraction form
79.36/118.99 = 28.00/x - Step 3: Cross multiply
79.36x = 118.99 × 28.00 - Step 4: Simplify right side
79.36x = 3,331.13 - Step 5: Solve for x
x = 3,331.13/79.36 - Step 6: Final answer
x = 41.98
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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.