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Finding the Fourth Proportional to 470.46, 706.11 and 308.34

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Solution

The fourth proportional to 470.46, 706.11 and 308.34 is: 462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.46 : 706.11 = 308.34 : x
  2. Step 2: Convert to fraction form
    470.46/706.11 = 308.34/x
  3. Step 3: Cross multiply
    470.46x = 706.11 × 308.34
  4. Step 4: Simplify right side
    470.46x = 217,721.96
  5. Step 5: Solve for x
    x = 217,721.96/470.46
  6. Step 6: Final answer
    x = 462.79

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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.