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Finding the Fourth Proportional to 512.99, 706.69 and 481.67

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Solution

The fourth proportional to 512.99, 706.69 and 481.67 is: 663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.99 : 706.69 = 481.67 : x
  2. Step 2: Convert to fraction form
    512.99/706.69 = 481.67/x
  3. Step 3: Cross multiply
    512.99x = 706.69 × 481.67
  4. Step 4: Simplify right side
    512.99x = 340,391.37
  5. Step 5: Solve for x
    x = 340,391.37/512.99
  6. Step 6: Final answer
    x = 663.54

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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.