Finding the Fourth Proportional to 306.65, 423.18 and 175.70
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Solution
The fourth proportional to 306.65, 423.18 and 175.70 is: 242.47
Step by Step Solution
- Step 1: Write the proportion equation
306.65 : 423.18 = 175.70 : x - Step 2: Convert to fraction form
306.65/423.18 = 175.70/x - Step 3: Cross multiply
306.65x = 423.18 × 175.70 - Step 4: Simplify right side
306.65x = 74,352.73 - Step 5: Solve for x
x = 74,352.73/306.65 - Step 6: Final answer
x = 242.47
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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.