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Finding the Fourth Proportional to 470.69, 706.46 and 251.50

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Solution

The fourth proportional to 470.69, 706.46 and 251.50 is: 377.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.69 : 706.46 = 251.50 : x
  2. Step 2: Convert to fraction form
    470.69/706.46 = 251.50/x
  3. Step 3: Cross multiply
    470.69x = 706.46 × 251.50
  4. Step 4: Simplify right side
    470.69x = 177,672.30
  5. Step 5: Solve for x
    x = 177,672.30/470.69
  6. Step 6: Final answer
    x = 377.48

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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.