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Finding the Fourth Proportional to 409.05, 564.48 and 222.54

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Solution

The fourth proportional to 409.05, 564.48 and 222.54 is: 307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.05 : 564.48 = 222.54 : x
  2. Step 2: Convert to fraction form
    409.05/564.48 = 222.54/x
  3. Step 3: Cross multiply
    409.05x = 564.48 × 222.54
  4. Step 4: Simplify right side
    409.05x = 125,619.38
  5. Step 5: Solve for x
    x = 125,619.38/409.05
  6. Step 6: Final answer
    x = 307.10

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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.