Finding the Fourth Proportional to 318.24, 439.08 and 201.84
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Solution
The fourth proportional to 318.24, 439.08 and 201.84 is: 278.48
Step by Step Solution
- Step 1: Write the proportion equation
318.24 : 439.08 = 201.84 : x - Step 2: Convert to fraction form
318.24/439.08 = 201.84/x - Step 3: Cross multiply
318.24x = 439.08 × 201.84 - Step 4: Simplify right side
318.24x = 88,623.91 - Step 5: Solve for x
x = 88,623.91/318.24 - Step 6: Final answer
x = 278.48
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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.