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Finding the Fourth Proportional to 470.37, 705.37 and 339.97

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Solution

The fourth proportional to 470.37, 705.37 and 339.97 is: 509.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.37 : 705.37 = 339.97 : x
  2. Step 2: Convert to fraction form
    470.37/705.37 = 339.97/x
  3. Step 3: Cross multiply
    470.37x = 705.37 × 339.97
  4. Step 4: Simplify right side
    470.37x = 239,806.40
  5. Step 5: Solve for x
    x = 239,806.40/470.37
  6. Step 6: Final answer
    x = 509.83

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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.