Finding the Fourth Proportional to 79.95, 119.89 and 25.09
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Solution
The fourth proportional to 79.95, 119.89 and 25.09 is: 37.62
Step by Step Solution
- Step 1: Write the proportion equation
79.95 : 119.89 = 25.09 : x - Step 2: Convert to fraction form
79.95/119.89 = 25.09/x - Step 3: Cross multiply
79.95x = 119.89 × 25.09 - Step 4: Simplify right side
79.95x = 3,008.04 - Step 5: Solve for x
x = 3,008.04/79.95 - Step 6: Final answer
x = 37.62
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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.