Finding the Fourth Proportional to 455.08, 628.26 and 351.88
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Solution
The fourth proportional to 455.08, 628.26 and 351.88 is: 485.79
Step by Step Solution
- Step 1: Write the proportion equation
455.08 : 628.26 = 351.88 : x - Step 2: Convert to fraction form
455.08/628.26 = 351.88/x - Step 3: Cross multiply
455.08x = 628.26 × 351.88 - Step 4: Simplify right side
455.08x = 221,072.13 - Step 5: Solve for x
x = 221,072.13/455.08 - Step 6: Final answer
x = 485.79
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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.