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Finding the Fourth Proportional to 617.70, 926.56 and 227.72

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Solution

The fourth proportional to 617.70, 926.56 and 227.72 is: 341.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.70 : 926.56 = 227.72 : x
  2. Step 2: Convert to fraction form
    617.70/926.56 = 227.72/x
  3. Step 3: Cross multiply
    617.70x = 926.56 × 227.72
  4. Step 4: Simplify right side
    617.70x = 210,991.90
  5. Step 5: Solve for x
    x = 210,991.90/617.70
  6. Step 6: Final answer
    x = 341.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.