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Finding the Fourth Proportional to 344.64, 475.80 and 228.39

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Solution

The fourth proportional to 344.64, 475.80 and 228.39 is: 315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.64 : 475.80 = 228.39 : x
  2. Step 2: Convert to fraction form
    344.64/475.80 = 228.39/x
  3. Step 3: Cross multiply
    344.64x = 475.80 × 228.39
  4. Step 4: Simplify right side
    344.64x = 108,667.96
  5. Step 5: Solve for x
    x = 108,667.96/344.64
  6. Step 6: Final answer
    x = 315.31

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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.