Finding the Fourth Proportional to 448.70, 619.13 and 283.14
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Solution
The fourth proportional to 448.70, 619.13 and 283.14 is: 390.68
Step by Step Solution
- Step 1: Write the proportion equation
448.70 : 619.13 = 283.14 : x - Step 2: Convert to fraction form
448.70/619.13 = 283.14/x - Step 3: Cross multiply
448.70x = 619.13 × 283.14 - Step 4: Simplify right side
448.70x = 175,299.05 - Step 5: Solve for x
x = 175,299.05/448.70 - Step 6: Final answer
x = 390.68
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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.