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Finding the Fourth Proportional to 358.10, 536.34 and 311.22

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Solution

The fourth proportional to 358.10, 536.34 and 311.22 is: 466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.10 : 536.34 = 311.22 : x
  2. Step 2: Convert to fraction form
    358.10/536.34 = 311.22/x
  3. Step 3: Cross multiply
    358.10x = 536.34 × 311.22
  4. Step 4: Simplify right side
    358.10x = 166,919.73
  5. Step 5: Solve for x
    x = 166,919.73/358.10
  6. Step 6: Final answer
    x = 466.13

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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.