Finding the Fourth Proportional to 457.18, 630.75 and 257.99
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Solution
The fourth proportional to 457.18, 630.75 and 257.99 is: 355.93
Step by Step Solution
- Step 1: Write the proportion equation
457.18 : 630.75 = 257.99 : x - Step 2: Convert to fraction form
457.18/630.75 = 257.99/x - Step 3: Cross multiply
457.18x = 630.75 × 257.99 - Step 4: Simplify right side
457.18x = 162,723.56 - Step 5: Solve for x
x = 162,723.56/457.18 - Step 6: Final answer
x = 355.93
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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.