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Finding the Fourth Proportional to 358.41, 536.81 and 311.53

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Solution

The fourth proportional to 358.41, 536.81 and 311.53 is: 466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.41 : 536.81 = 311.53 : x
  2. Step 2: Convert to fraction form
    358.41/536.81 = 311.53/x
  3. Step 3: Cross multiply
    358.41x = 536.81 × 311.53
  4. Step 4: Simplify right side
    358.41x = 167,233.37
  5. Step 5: Solve for x
    x = 167,233.37/358.41
  6. Step 6: Final answer
    x = 466.60

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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.