Finding the Fourth Proportional to 556.67, 768.19 and 307.99
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Solution
The fourth proportional to 556.67, 768.19 and 307.99 is: 425.02
Step by Step Solution
- Step 1: Write the proportion equation
556.67 : 768.19 = 307.99 : x - Step 2: Convert to fraction form
556.67/768.19 = 307.99/x - Step 3: Cross multiply
556.67x = 768.19 × 307.99 - Step 4: Simplify right side
556.67x = 236,593.30 - Step 5: Solve for x
x = 236,593.30/556.67 - Step 6: Final answer
x = 425.02
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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.