Finding the Fourth Proportional to 284.68, 392.88 and 189.99
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Solution
The fourth proportional to 284.68, 392.88 and 189.99 is: 262.20
Step by Step Solution
- Step 1: Write the proportion equation
284.68 : 392.88 = 189.99 : x - Step 2: Convert to fraction form
284.68/392.88 = 189.99/x - Step 3: Cross multiply
284.68x = 392.88 × 189.99 - Step 4: Simplify right side
284.68x = 74,642.38 - Step 5: Solve for x
x = 74,642.38/284.68 - Step 6: Final answer
x = 262.20
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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.