Finding the Fourth Proportional to 207.60, 310.96 and 171.55
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Solution
The fourth proportional to 207.60, 310.96 and 171.55 is: 256.96
Step by Step Solution
- Step 1: Write the proportion equation
207.60 : 310.96 = 171.55 : x - Step 2: Convert to fraction form
207.60/310.96 = 171.55/x - Step 3: Cross multiply
207.60x = 310.96 × 171.55 - Step 4: Simplify right side
207.60x = 53,345.19 - Step 5: Solve for x
x = 53,345.19/207.60 - Step 6: Final answer
x = 256.96
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.