Finding the Fourth Proportional to 284.87, 393.02 and 186.68
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Solution
The fourth proportional to 284.87, 393.02 and 186.68 is: 257.55
Step by Step Solution
- Step 1: Write the proportion equation
284.87 : 393.02 = 186.68 : x - Step 2: Convert to fraction form
284.87/393.02 = 186.68/x - Step 3: Cross multiply
284.87x = 393.02 × 186.68 - Step 4: Simplify right side
284.87x = 73,366.08 - Step 5: Solve for x
x = 73,366.08/284.87 - Step 6: Final answer
x = 257.55
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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.