Finding the Fourth Proportional to 457.91, 686.26 and 399.99
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Solution
The fourth proportional to 457.91, 686.26 and 399.99 is: 599.46
Step by Step Solution
- Step 1: Write the proportion equation
457.91 : 686.26 = 399.99 : x - Step 2: Convert to fraction form
457.91/686.26 = 399.99/x - Step 3: Cross multiply
457.91x = 686.26 × 399.99 - Step 4: Simplify right side
457.91x = 274,497.14 - Step 5: Solve for x
x = 274,497.14/457.91 - Step 6: Final answer
x = 599.46
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.