Finding the Fourth Proportional to 393.26, 542.97 and 245.96
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Solution
The fourth proportional to 393.26, 542.97 and 245.96 is: 339.59
Step by Step Solution
- Step 1: Write the proportion equation
393.26 : 542.97 = 245.96 : x - Step 2: Convert to fraction form
393.26/542.97 = 245.96/x - Step 3: Cross multiply
393.26x = 542.97 × 245.96 - Step 4: Simplify right side
393.26x = 133,548.90 - Step 5: Solve for x
x = 133,548.90/393.26 - Step 6: Final answer
x = 339.59
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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.