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Finding the Fourth Proportional to 470.40, 705.76 and 196.36

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Solution

The fourth proportional to 470.40, 705.76 and 196.36 is: 294.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.40 : 705.76 = 196.36 : x
  2. Step 2: Convert to fraction form
    470.40/705.76 = 196.36/x
  3. Step 3: Cross multiply
    470.40x = 705.76 × 196.36
  4. Step 4: Simplify right side
    470.40x = 138,583.03
  5. Step 5: Solve for x
    x = 138,583.03/470.40
  6. Step 6: Final answer
    x = 294.61

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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.