Finding the Fourth Proportional to 199.91, 299.84 and 69.91
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Solution
The fourth proportional to 199.91, 299.84 and 69.91 is: 104.85
Step by Step Solution
- Step 1: Write the proportion equation
199.91 : 299.84 = 69.91 : x - Step 2: Convert to fraction form
199.91/299.84 = 69.91/x - Step 3: Cross multiply
199.91x = 299.84 × 69.91 - Step 4: Simplify right side
199.91x = 20,961.24 - Step 5: Solve for x
x = 20,961.24/199.91 - Step 6: Final answer
x = 104.85
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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.