Finding the Fourth Proportional to 286.18, 394.35 and 207.36
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Solution
The fourth proportional to 286.18, 394.35 and 207.36 is: 285.73
Step by Step Solution
- Step 1: Write the proportion equation
286.18 : 394.35 = 207.36 : x - Step 2: Convert to fraction form
286.18/394.35 = 207.36/x - Step 3: Cross multiply
286.18x = 394.35 × 207.36 - Step 4: Simplify right side
286.18x = 81,769.41 - Step 5: Solve for x
x = 81,769.41/286.18 - Step 6: Final answer
x = 285.73
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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.