Finding the Fourth Proportional to 405.14, 558.99 and 247.80
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Solution
The fourth proportional to 405.14, 558.99 and 247.80 is: 341.90
Step by Step Solution
- Step 1: Write the proportion equation
405.14 : 558.99 = 247.80 : x - Step 2: Convert to fraction form
405.14/558.99 = 247.80/x - Step 3: Cross multiply
405.14x = 558.99 × 247.80 - Step 4: Simplify right side
405.14x = 138,517.72 - Step 5: Solve for x
x = 138,517.72/405.14 - Step 6: Final answer
x = 341.90
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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.