Finding the Fourth Proportional to 393.26, 542.24 and 330.99
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Solution
The fourth proportional to 393.26, 542.24 and 330.99 is: 456.38
Step by Step Solution
- Step 1: Write the proportion equation
393.26 : 542.24 = 330.99 : x - Step 2: Convert to fraction form
393.26/542.24 = 330.99/x - Step 3: Cross multiply
393.26x = 542.24 × 330.99 - Step 4: Simplify right side
393.26x = 179,475.43 - Step 5: Solve for x
x = 179,475.43/393.26 - Step 6: Final answer
x = 456.38
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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.