Finding the Fourth Proportional to 755.11, 1,041.08 and 489.08
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Solution
The fourth proportional to 755.11, 1,041.08 and 489.08 is: 674.30
Step by Step Solution
- Step 1: Write the proportion equation
755.11 : 1,041.08 = 489.08 : x - Step 2: Convert to fraction form
755.11/1,041.08 = 489.08/x - Step 3: Cross multiply
755.11x = 1,041.08 × 489.08 - Step 4: Simplify right side
755.11x = 509,171.41 - Step 5: Solve for x
x = 509,171.41/755.11 - Step 6: Final answer
x = 674.30
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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.