Finding the Fourth Proportional to 397.24, 548.09 and 239.75
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Solution
The fourth proportional to 397.24, 548.09 and 239.75 is: 330.79
Step by Step Solution
- Step 1: Write the proportion equation
397.24 : 548.09 = 239.75 : x - Step 2: Convert to fraction form
397.24/548.09 = 239.75/x - Step 3: Cross multiply
397.24x = 548.09 × 239.75 - Step 4: Simplify right side
397.24x = 131,400.64 - Step 5: Solve for x
x = 131,400.64/397.24 - Step 6: Final answer
x = 330.79
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.