Finding the Fourth Proportional to 278.10, 416.26 and 155.99
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Solution
The fourth proportional to 278.10, 416.26 and 155.99 is: 233.49
Step by Step Solution
- Step 1: Write the proportion equation
278.10 : 416.26 = 155.99 : x - Step 2: Convert to fraction form
278.10/416.26 = 155.99/x - Step 3: Cross multiply
278.10x = 416.26 × 155.99 - Step 4: Simplify right side
278.10x = 64,932.40 - Step 5: Solve for x
x = 64,932.40/278.10 - Step 6: Final answer
x = 233.49
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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.