Finding the Fourth Proportional to 438.99, 605.62 and 308.08
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Solution
The fourth proportional to 438.99, 605.62 and 308.08 is: 425.02
Step by Step Solution
- Step 1: Write the proportion equation
438.99 : 605.62 = 308.08 : x - Step 2: Convert to fraction form
438.99/605.62 = 308.08/x - Step 3: Cross multiply
438.99x = 605.62 × 308.08 - Step 4: Simplify right side
438.99x = 186,579.41 - Step 5: Solve for x
x = 186,579.41/438.99 - Step 6: Final answer
x = 425.02
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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.