Finding the Fourth Proportional to 383.80, 575.99 and 307.68
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Solution
The fourth proportional to 383.80, 575.99 and 307.68 is: 461.75
Step by Step Solution
- Step 1: Write the proportion equation
383.80 : 575.99 = 307.68 : x - Step 2: Convert to fraction form
383.80/575.99 = 307.68/x - Step 3: Cross multiply
383.80x = 575.99 × 307.68 - Step 4: Simplify right side
383.80x = 177,220.19 - Step 5: Solve for x
x = 177,220.19/383.80 - Step 6: Final answer
x = 461.75
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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.