Finding the Fourth Proportional to 724.99, 1,000.09 and 458.95
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Solution
The fourth proportional to 724.99, 1,000.09 and 458.95 is: 633.09
Step by Step Solution
- Step 1: Write the proportion equation
724.99 : 1,000.09 = 458.95 : x - Step 2: Convert to fraction form
724.99/1,000.09 = 458.95/x - Step 3: Cross multiply
724.99x = 1,000.09 × 458.95 - Step 4: Simplify right side
724.99x = 458,986.31 - Step 5: Solve for x
x = 458,986.31/724.99 - Step 6: Final answer
x = 633.09
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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.