Finding the Fourth Proportional to 306.68, 423.08 and 201.74
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Solution
The fourth proportional to 306.68, 423.08 and 201.74 is: 278.31
Step by Step Solution
- Step 1: Write the proportion equation
306.68 : 423.08 = 201.74 : x - Step 2: Convert to fraction form
306.68/423.08 = 201.74/x - Step 3: Cross multiply
306.68x = 423.08 × 201.74 - Step 4: Simplify right side
306.68x = 85,352.16 - Step 5: Solve for x
x = 85,352.16/306.68 - Step 6: Final answer
x = 278.31
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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.