Finding the Fourth Proportional to 405.74, 559.96 and 239.99
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Solution
The fourth proportional to 405.74, 559.96 and 239.99 is: 331.21
Step by Step Solution
- Step 1: Write the proportion equation
405.74 : 559.96 = 239.99 : x - Step 2: Convert to fraction form
405.74/559.96 = 239.99/x - Step 3: Cross multiply
405.74x = 559.96 × 239.99 - Step 4: Simplify right side
405.74x = 134,384.80 - Step 5: Solve for x
x = 134,384.80/405.74 - Step 6: Final answer
x = 331.21
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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.