Finding the Fourth Proportional to 740.17, 1,021.35 and 460
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Solution
The fourth proportional to 740.17, 1,021.35 and 460 is: 634.75
Step by Step Solution
- Step 1: Write the proportion equation
740.17 : 1,021.35 = 460 : x - Step 2: Convert to fraction form
740.17/1,021.35 = 460/x - Step 3: Cross multiply
740.17x = 1,021.35 × 460 - Step 4: Simplify right side
740.17x = 469,821 - Step 5: Solve for x
x = 469,821/740.17 - Step 6: Final answer
x = 634.75
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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.