Finding the Fourth Proportional to 455.24, 628.08 and 280.55
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Solution
The fourth proportional to 455.24, 628.08 and 280.55 is: 387.07
Step by Step Solution
- Step 1: Write the proportion equation
455.24 : 628.08 = 280.55 : x - Step 2: Convert to fraction form
455.24/628.08 = 280.55/x - Step 3: Cross multiply
455.24x = 628.08 × 280.55 - Step 4: Simplify right side
455.24x = 176,207.84 - Step 5: Solve for x
x = 176,207.84/455.24 - Step 6: Final answer
x = 387.07
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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.