Finding the Fourth Proportional to 881.99, 1,217.18 and 489
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Solution
The fourth proportional to 881.99, 1,217.18 and 489 is: 674.84
Step by Step Solution
- Step 1: Write the proportion equation
881.99 : 1,217.18 = 489 : x - Step 2: Convert to fraction form
881.99/1,217.18 = 489/x - Step 3: Cross multiply
881.99x = 1,217.18 × 489 - Step 4: Simplify right side
881.99x = 595,198.58 - Step 5: Solve for x
x = 595,198.58/881.99 - Step 6: Final answer
x = 674.84
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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.