Finding the Fourth Proportional to 818.88, 1,129.68 and 524
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Solution
The fourth proportional to 818.88, 1,129.68 and 524 is: 722.88
Step by Step Solution
- Step 1: Write the proportion equation
818.88 : 1,129.68 = 524 : x - Step 2: Convert to fraction form
818.88/1,129.68 = 524/x - Step 3: Cross multiply
818.88x = 1,129.68 × 524 - Step 4: Simplify right side
818.88x = 591,952.32 - Step 5: Solve for x
x = 591,952.32/818.88 - Step 6: Final answer
x = 722.88
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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.