Finding the Fourth Proportional to 397.14, 548.18 and 247.84
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Solution
The fourth proportional to 397.14, 548.18 and 247.84 is: 342.10
Step by Step Solution
- Step 1: Write the proportion equation
397.14 : 548.18 = 247.84 : x - Step 2: Convert to fraction form
397.14/548.18 = 247.84/x - Step 3: Cross multiply
397.14x = 548.18 × 247.84 - Step 4: Simplify right side
397.14x = 135,860.93 - Step 5: Solve for x
x = 135,860.93/397.14 - Step 6: Final answer
x = 342.10
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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.