Finding the Fourth Proportional to 318.20, 439.08 and 193.87
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Solution
The fourth proportional to 318.20, 439.08 and 193.87 is: 267.51
Step by Step Solution
- Step 1: Write the proportion equation
318.20 : 439.08 = 193.87 : x - Step 2: Convert to fraction form
318.20/439.08 = 193.87/x - Step 3: Cross multiply
318.20x = 439.08 × 193.87 - Step 4: Simplify right side
318.20x = 85,122.24 - Step 5: Solve for x
x = 85,122.24/318.20 - Step 6: Final answer
x = 267.51
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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.