Finding the Fourth Proportional to 284.99, 392.99 and 219.38
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Solution
The fourth proportional to 284.99, 392.99 and 219.38 is: 302.51
Step by Step Solution
- Step 1: Write the proportion equation
284.99 : 392.99 = 219.38 : x - Step 2: Convert to fraction form
284.99/392.99 = 219.38/x - Step 3: Cross multiply
284.99x = 392.99 × 219.38 - Step 4: Simplify right side
284.99x = 86,211.08 - Step 5: Solve for x
x = 86,211.08/284.99 - Step 6: Final answer
x = 302.51
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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.