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Finding the Fourth Proportional to 311.15, 466.27 and 283.81

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Solution

The fourth proportional to 311.15, 466.27 and 283.81 is: 425.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.15 : 466.27 = 283.81 : x
  2. Step 2: Convert to fraction form
    311.15/466.27 = 283.81/x
  3. Step 3: Cross multiply
    311.15x = 466.27 × 283.81
  4. Step 4: Simplify right side
    311.15x = 132,332.09
  5. Step 5: Solve for x
    x = 132,332.09/311.15
  6. Step 6: Final answer
    x = 425.30

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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.