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Finding the Fourth Proportional to 404.12, 557.66 and 227.06

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Solution

The fourth proportional to 404.12, 557.66 and 227.06 is: 313.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.12 : 557.66 = 227.06 : x
  2. Step 2: Convert to fraction form
    404.12/557.66 = 227.06/x
  3. Step 3: Cross multiply
    404.12x = 557.66 × 227.06
  4. Step 4: Simplify right side
    404.12x = 126,622.28
  5. Step 5: Solve for x
    x = 126,622.28/404.12
  6. Step 6: Final answer
    x = 313.33

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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.