Finding the Fourth Proportional to 207.32, 286.62 and 155.48
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Solution
The fourth proportional to 207.32, 286.62 and 155.48 is: 214.95
Step by Step Solution
- Step 1: Write the proportion equation
207.32 : 286.62 = 155.48 : x - Step 2: Convert to fraction form
207.32/286.62 = 155.48/x - Step 3: Cross multiply
207.32x = 286.62 × 155.48 - Step 4: Simplify right side
207.32x = 44,563.68 - Step 5: Solve for x
x = 44,563.68/207.32 - Step 6: Final answer
x = 214.95
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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.