Finding the Fourth Proportional to 484.14, 669.36 and 428.75
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Solution
The fourth proportional to 484.14, 669.36 and 428.75 is: 592.78
Step by Step Solution
- Step 1: Write the proportion equation
484.14 : 669.36 = 428.75 : x - Step 2: Convert to fraction form
484.14/669.36 = 428.75/x - Step 3: Cross multiply
484.14x = 669.36 × 428.75 - Step 4: Simplify right side
484.14x = 286,988.10 - Step 5: Solve for x
x = 286,988.10/484.14 - Step 6: Final answer
x = 592.78
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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.