Finding the Fourth Proportional to 117.99, 176.90 and 52.99
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Solution
The fourth proportional to 117.99, 176.90 and 52.99 is: 79.45
Step by Step Solution
- Step 1: Write the proportion equation
117.99 : 176.90 = 52.99 : x - Step 2: Convert to fraction form
117.99/176.90 = 52.99/x - Step 3: Cross multiply
117.99x = 176.90 × 52.99 - Step 4: Simplify right side
117.99x = 9,373.93 - Step 5: Solve for x
x = 9,373.93/117.99 - Step 6: Final answer
x = 79.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.