Finding the Fourth Proportional to 306.68, 423.21 and 175.68
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Solution
The fourth proportional to 306.68, 423.21 and 175.68 is: 242.44
Step by Step Solution
- Step 1: Write the proportion equation
306.68 : 423.21 = 175.68 : x - Step 2: Convert to fraction form
306.68/423.21 = 175.68/x - Step 3: Cross multiply
306.68x = 423.21 × 175.68 - Step 4: Simplify right side
306.68x = 74,349.53 - Step 5: Solve for x
x = 74,349.53/306.68 - Step 6: Final answer
x = 242.44
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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.