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Finding the Fourth Proportional to 251.44, 375.56 and 228.40

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Solution

The fourth proportional to 251.44, 375.56 and 228.40 is: 341.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.44 : 375.56 = 228.40 : x
  2. Step 2: Convert to fraction form
    251.44/375.56 = 228.40/x
  3. Step 3: Cross multiply
    251.44x = 375.56 × 228.40
  4. Step 4: Simplify right side
    251.44x = 85,777.90
  5. Step 5: Solve for x
    x = 85,777.90/251.44
  6. Step 6: Final answer
    x = 341.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.