Finding the Fourth Proportional to 207.49, 285.93 and 155.09
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Solution
The fourth proportional to 207.49, 285.93 and 155.09 is: 213.72
Step by Step Solution
- Step 1: Write the proportion equation
207.49 : 285.93 = 155.09 : x - Step 2: Convert to fraction form
207.49/285.93 = 155.09/x - Step 3: Cross multiply
207.49x = 285.93 × 155.09 - Step 4: Simplify right side
207.49x = 44,344.88 - Step 5: Solve for x
x = 44,344.88/207.49 - Step 6: Final answer
x = 213.72
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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.