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Finding the Fourth Proportional to 344.67, 516.89 and 289.85

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Solution

The fourth proportional to 344.67, 516.89 and 289.85 is: 434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.67 : 516.89 = 289.85 : x
  2. Step 2: Convert to fraction form
    344.67/516.89 = 289.85/x
  3. Step 3: Cross multiply
    344.67x = 516.89 × 289.85
  4. Step 4: Simplify right side
    344.67x = 149,816.53
  5. Step 5: Solve for x
    x = 149,816.53/344.67
  6. Step 6: Final answer
    x = 434.67

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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.