Finding the Fourth Proportional to 79.23, 118.83 and 69.99
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Solution
The fourth proportional to 79.23, 118.83 and 69.99 is: 104.97
Step by Step Solution
- Step 1: Write the proportion equation
79.23 : 118.83 = 69.99 : x - Step 2: Convert to fraction form
79.23/118.83 = 69.99/x - Step 3: Cross multiply
79.23x = 118.83 × 69.99 - Step 4: Simplify right side
79.23x = 8,316.91 - Step 5: Solve for x
x = 8,316.91/79.23 - Step 6: Final answer
x = 104.97
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.