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Finding the Fourth Proportional to 272.32, 375.46 and 228.56

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Solution

The fourth proportional to 272.32, 375.46 and 228.56 is: 315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.32 : 375.46 = 228.56 : x
  2. Step 2: Convert to fraction form
    272.32/375.46 = 228.56/x
  3. Step 3: Cross multiply
    272.32x = 375.46 × 228.56
  4. Step 4: Simplify right side
    272.32x = 85,815.14
  5. Step 5: Solve for x
    x = 85,815.14/272.32
  6. Step 6: Final answer
    x = 315.13

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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.