Finding the Fourth Proportional to 55.76, 83.10 and 53
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Solution
The fourth proportional to 55.76, 83.10 and 53 is: 78.99
Step by Step Solution
- Step 1: Write the proportion equation
55.76 : 83.10 = 53 : x - Step 2: Convert to fraction form
55.76/83.10 = 53/x - Step 3: Cross multiply
55.76x = 83.10 × 53 - Step 4: Simplify right side
55.76x = 4,404.30 - Step 5: Solve for x
x = 4,404.30/55.76 - Step 6: Final answer
x = 78.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.