Finding the Fourth Proportional to 405.63, 559.44 and 288.99
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Solution
The fourth proportional to 405.63, 559.44 and 288.99 is: 398.57
Step by Step Solution
- Step 1: Write the proportion equation
405.63 : 559.44 = 288.99 : x - Step 2: Convert to fraction form
405.63/559.44 = 288.99/x - Step 3: Cross multiply
405.63x = 559.44 × 288.99 - Step 4: Simplify right side
405.63x = 161,672.57 - Step 5: Solve for x
x = 161,672.57/405.63 - Step 6: Final answer
x = 398.57
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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.