Finding the Fourth Proportional to 456.12, 628.95 and 372.99
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Solution
The fourth proportional to 456.12, 628.95 and 372.99 is: 514.32
Step by Step Solution
- Step 1: Write the proportion equation
456.12 : 628.95 = 372.99 : x - Step 2: Convert to fraction form
456.12/628.95 = 372.99/x - Step 3: Cross multiply
456.12x = 628.95 × 372.99 - Step 4: Simplify right side
456.12x = 234,592.06 - Step 5: Solve for x
x = 234,592.06/456.12 - Step 6: Final answer
x = 514.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.