Finding the Fourth Proportional to 199.33, 299.35 and 130.99
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Solution
The fourth proportional to 199.33, 299.35 and 130.99 is: 196.72
Step by Step Solution
- Step 1: Write the proportion equation
199.33 : 299.35 = 130.99 : x - Step 2: Convert to fraction form
199.33/299.35 = 130.99/x - Step 3: Cross multiply
199.33x = 299.35 × 130.99 - Step 4: Simplify right side
199.33x = 39,211.86 - Step 5: Solve for x
x = 39,211.86/199.33 - Step 6: Final answer
x = 196.72
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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.