Finding the Fourth Proportional to 883.68, 1,220 and 552.55
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Solution
The fourth proportional to 883.68, 1,220 and 552.55 is: 762.85
Step by Step Solution
- Step 1: Write the proportion equation
883.68 : 1,220 = 552.55 : x - Step 2: Convert to fraction form
883.68/1,220 = 552.55/x - Step 3: Cross multiply
883.68x = 1,220 × 552.55 - Step 4: Simplify right side
883.68x = 674,111 - Step 5: Solve for x
x = 674,111/883.68 - Step 6: Final answer
x = 762.85
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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.