Finding the Fourth Proportional to 475.99, 656.99 and 279.56
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Solution
The fourth proportional to 475.99, 656.99 and 279.56 is: 385.87
Step by Step Solution
- Step 1: Write the proportion equation
475.99 : 656.99 = 279.56 : x - Step 2: Convert to fraction form
475.99/656.99 = 279.56/x - Step 3: Cross multiply
475.99x = 656.99 × 279.56 - Step 4: Simplify right side
475.99x = 183,668.12 - Step 5: Solve for x
x = 183,668.12/475.99 - Step 6: Final answer
x = 385.87
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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.