Finding the Fourth Proportional to 306.70, 423.21 and 175.71
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Solution
The fourth proportional to 306.70, 423.21 and 175.71 is: 242.46
Step by Step Solution
- Step 1: Write the proportion equation
306.70 : 423.21 = 175.71 : x - Step 2: Convert to fraction form
306.70/423.21 = 175.71/x - Step 3: Cross multiply
306.70x = 423.21 × 175.71 - Step 4: Simplify right side
306.70x = 74,362.23 - Step 5: Solve for x
x = 74,362.23/306.70 - Step 6: Final answer
x = 242.46
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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.