Finding the Fourth Proportional to 284.97, 392.99 and 206.80
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Solution
The fourth proportional to 284.97, 392.99 and 206.80 is: 285.19
Step by Step Solution
- Step 1: Write the proportion equation
284.97 : 392.99 = 206.80 : x - Step 2: Convert to fraction form
284.97/392.99 = 206.80/x - Step 3: Cross multiply
284.97x = 392.99 × 206.80 - Step 4: Simplify right side
284.97x = 81,269.30 - Step 5: Solve for x
x = 81,269.30/284.97 - Step 6: Final answer
x = 285.19
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.