Finding the Fourth Proportional to 354.93, 489.80 and 197.56
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Solution
The fourth proportional to 354.93, 489.80 and 197.56 is: 272.64
Step by Step Solution
- Step 1: Write the proportion equation
354.93 : 489.80 = 197.56 : x - Step 2: Convert to fraction form
354.93/489.80 = 197.56/x - Step 3: Cross multiply
354.93x = 489.80 × 197.56 - Step 4: Simplify right side
354.93x = 96,765.99 - Step 5: Solve for x
x = 96,765.99/354.93 - Step 6: Final answer
x = 272.64
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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.