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Finding the Fourth Proportional to 358.85, 538.81 and 222.47

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Solution

The fourth proportional to 358.85, 538.81 and 222.47 is: 334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.85 : 538.81 = 222.47 : x
  2. Step 2: Convert to fraction form
    358.85/538.81 = 222.47/x
  3. Step 3: Cross multiply
    358.85x = 538.81 × 222.47
  4. Step 4: Simplify right side
    358.85x = 119,869.06
  5. Step 5: Solve for x
    x = 119,869.06/358.85
  6. Step 6: Final answer
    x = 334.04

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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.