Finding the Fourth Proportional to 317.79, 476.88 and 163.84
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Solution
The fourth proportional to 317.79, 476.88 and 163.84 is: 245.86
Step by Step Solution
- Step 1: Write the proportion equation
317.79 : 476.88 = 163.84 : x - Step 2: Convert to fraction form
317.79/476.88 = 163.84/x - Step 3: Cross multiply
317.79x = 476.88 × 163.84 - Step 4: Simplify right side
317.79x = 78,132.02 - Step 5: Solve for x
x = 78,132.02/317.79 - Step 6: Final answer
x = 245.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.