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Finding the Fourth Proportional to 336.80, 472.60 and 336.80

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Solution

The fourth proportional to 336.80, 472.60 and 336.80 is: 472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.80 : 472.60 = 336.80 : x
  2. Step 2: Convert to fraction form
    336.80/472.60 = 336.80/x
  3. Step 3: Cross multiply
    336.80x = 472.60 × 336.80
  4. Step 4: Simplify right side
    336.80x = 159,171.68
  5. Step 5: Solve for x
    x = 159,171.68/336.80
  6. Step 6: Final answer
    x = 472.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.