Finding the Fourth Proportional to 453.44, 625.79 and 278.75
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Solution
The fourth proportional to 453.44, 625.79 and 278.75 is: 384.70
Step by Step Solution
- Step 1: Write the proportion equation
453.44 : 625.79 = 278.75 : x - Step 2: Convert to fraction form
453.44/625.79 = 278.75/x - Step 3: Cross multiply
453.44x = 625.79 × 278.75 - Step 4: Simplify right side
453.44x = 174,438.96 - Step 5: Solve for x
x = 174,438.96/453.44 - Step 6: Final answer
x = 384.70
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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.