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Finding the Fourth Proportional to 344.80, 475.64 and 246.40

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Solution

The fourth proportional to 344.80, 475.64 and 246.40 is: 339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.80 : 475.64 = 246.40 : x
  2. Step 2: Convert to fraction form
    344.80/475.64 = 246.40/x
  3. Step 3: Cross multiply
    344.80x = 475.64 × 246.40
  4. Step 4: Simplify right side
    344.80x = 117,197.70
  5. Step 5: Solve for x
    x = 117,197.70/344.80
  6. Step 6: Final answer
    x = 339.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.