Finding the Fourth Proportional to 354.55, 489.26 and 197.17
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Solution
The fourth proportional to 354.55, 489.26 and 197.17 is: 272.08
Step by Step Solution
- Step 1: Write the proportion equation
354.55 : 489.26 = 197.17 : x - Step 2: Convert to fraction form
354.55/489.26 = 197.17/x - Step 3: Cross multiply
354.55x = 489.26 × 197.17 - Step 4: Simplify right side
354.55x = 96,465.19 - Step 5: Solve for x
x = 96,465.19/354.55 - Step 6: Final answer
x = 272.08
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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.