Finding the Fourth Proportional to 438.95, 605.88 and 307.99
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Solution
The fourth proportional to 438.95, 605.88 and 307.99 is: 425.11
Step by Step Solution
- Step 1: Write the proportion equation
438.95 : 605.88 = 307.99 : x - Step 2: Convert to fraction form
438.95/605.88 = 307.99/x - Step 3: Cross multiply
438.95x = 605.88 × 307.99 - Step 4: Simplify right side
438.95x = 186,603.44 - Step 5: Solve for x
x = 186,603.44/438.95 - Step 6: Final answer
x = 425.11
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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.