Finding the Fourth Proportional to 322.99, 445.40 and 229.74
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Solution
The fourth proportional to 322.99, 445.40 and 229.74 is: 316.81
Step by Step Solution
- Step 1: Write the proportion equation
322.99 : 445.40 = 229.74 : x - Step 2: Convert to fraction form
322.99/445.40 = 229.74/x - Step 3: Cross multiply
322.99x = 445.40 × 229.74 - Step 4: Simplify right side
322.99x = 102,324.24 - Step 5: Solve for x
x = 102,324.24/322.99 - Step 6: Final answer
x = 316.81
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.