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Finding the Fourth Proportional to 404.19, 557.81 and 227.17

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Solution

The fourth proportional to 404.19, 557.81 and 227.17 is: 313.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.19 : 557.81 = 227.17 : x
  2. Step 2: Convert to fraction form
    404.19/557.81 = 227.17/x
  3. Step 3: Cross multiply
    404.19x = 557.81 × 227.17
  4. Step 4: Simplify right side
    404.19x = 126,717.70
  5. Step 5: Solve for x
    x = 126,717.70/404.19
  6. Step 6: Final answer
    x = 313.51

Related Problems

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Double scale
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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.