Finding the Fourth Proportional to 318.23, 439.28 and 207.73
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Solution
The fourth proportional to 318.23, 439.28 and 207.73 is: 286.75
Step by Step Solution
- Step 1: Write the proportion equation
318.23 : 439.28 = 207.73 : x - Step 2: Convert to fraction form
318.23/439.28 = 207.73/x - Step 3: Cross multiply
318.23x = 439.28 × 207.73 - Step 4: Simplify right side
318.23x = 91,251.63 - Step 5: Solve for x
x = 91,251.63/318.23 - Step 6: Final answer
x = 286.75
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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.