Finding the Fourth Proportional to 349.16, 481.28 and 278.99
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Solution
The fourth proportional to 349.16, 481.28 and 278.99 is: 384.57
Step by Step Solution
- Step 1: Write the proportion equation
349.16 : 481.28 = 278.99 : x - Step 2: Convert to fraction form
349.16/481.28 = 278.99/x - Step 3: Cross multiply
349.16x = 481.28 × 278.99 - Step 4: Simplify right side
349.16x = 134,274.21 - Step 5: Solve for x
x = 134,274.21/349.16 - Step 6: Final answer
x = 384.57
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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.