Finding the Fourth Proportional to 207.08, 285.77 and 112.55
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Solution
The fourth proportional to 207.08, 285.77 and 112.55 is: 155.32
Step by Step Solution
- Step 1: Write the proportion equation
207.08 : 285.77 = 112.55 : x - Step 2: Convert to fraction form
207.08/285.77 = 112.55/x - Step 3: Cross multiply
207.08x = 285.77 × 112.55 - Step 4: Simplify right side
207.08x = 32,163.57 - Step 5: Solve for x
x = 32,163.57/207.08 - Step 6: Final answer
x = 155.32
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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.