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Finding the Fourth Proportional to 228.60, 344.05 and 206.23

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Solution

The fourth proportional to 228.60, 344.05 and 206.23 is: 310.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.60 : 344.05 = 206.23 : x
  2. Step 2: Convert to fraction form
    228.60/344.05 = 206.23/x
  3. Step 3: Cross multiply
    228.60x = 344.05 × 206.23
  4. Step 4: Simplify right side
    228.60x = 70,953.43
  5. Step 5: Solve for x
    x = 70,953.43/228.60
  6. Step 6: Final answer
    x = 310.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.