Finding the Fourth Proportional to 556.69, 768.17 and 307.99
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Solution
The fourth proportional to 556.69, 768.17 and 307.99 is: 424.99
Step by Step Solution
- Step 1: Write the proportion equation
556.69 : 768.17 = 307.99 : x - Step 2: Convert to fraction form
556.69/768.17 = 307.99/x - Step 3: Cross multiply
556.69x = 768.17 × 307.99 - Step 4: Simplify right side
556.69x = 236,587.14 - Step 5: Solve for x
x = 236,587.14/556.69 - Step 6: Final answer
x = 424.99
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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.