Finding the Fourth Proportional to 427.64, 590.09 and 279.99
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Solution
The fourth proportional to 427.64, 590.09 and 279.99 is: 386.35
Step by Step Solution
- Step 1: Write the proportion equation
427.64 : 590.09 = 279.99 : x - Step 2: Convert to fraction form
427.64/590.09 = 279.99/x - Step 3: Cross multiply
427.64x = 590.09 × 279.99 - Step 4: Simplify right side
427.64x = 165,217.90 - Step 5: Solve for x
x = 165,217.90/427.64 - Step 6: Final answer
x = 386.35
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.