Finding the Fourth Proportional to 203.99, 306.21 and 112.91
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Solution
The fourth proportional to 203.99, 306.21 and 112.91 is: 169.49
Step by Step Solution
- Step 1: Write the proportion equation
203.99 : 306.21 = 112.91 : x - Step 2: Convert to fraction form
203.99/306.21 = 112.91/x - Step 3: Cross multiply
203.99x = 306.21 × 112.91 - Step 4: Simplify right side
203.99x = 34,574.17 - Step 5: Solve for x
x = 34,574.17/203.99 - Step 6: Final answer
x = 169.49
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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.