Finding the Fourth Proportional to 318.19, 475.19 and 274.94
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Solution
The fourth proportional to 318.19, 475.19 and 274.94 is: 410.60
Step by Step Solution
- Step 1: Write the proportion equation
318.19 : 475.19 = 274.94 : x - Step 2: Convert to fraction form
318.19/475.19 = 274.94/x - Step 3: Cross multiply
318.19x = 475.19 × 274.94 - Step 4: Simplify right side
318.19x = 130,648.55 - Step 5: Solve for x
x = 130,648.55/318.19 - Step 6: Final answer
x = 410.60
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.