Finding the Fourth Proportional to 316.96, 475.61 and 170.68
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Solution
The fourth proportional to 316.96, 475.61 and 170.68 is: 256.11
Step by Step Solution
- Step 1: Write the proportion equation
316.96 : 475.61 = 170.68 : x - Step 2: Convert to fraction form
316.96/475.61 = 170.68/x - Step 3: Cross multiply
316.96x = 475.61 × 170.68 - Step 4: Simplify right side
316.96x = 81,177.11 - Step 5: Solve for x
x = 81,177.11/316.96 - Step 6: Final answer
x = 256.11
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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.