Finding the Fourth Proportional to 63.57, 87.59 and 55.88
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Solution
The fourth proportional to 63.57, 87.59 and 55.88 is: 76.99
Step by Step Solution
- Step 1: Write the proportion equation
63.57 : 87.59 = 55.88 : x - Step 2: Convert to fraction form
63.57/87.59 = 55.88/x - Step 3: Cross multiply
63.57x = 87.59 × 55.88 - Step 4: Simplify right side
63.57x = 4,894.53 - Step 5: Solve for x
x = 4,894.53/63.57 - Step 6: Final answer
x = 76.99
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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.