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Finding the Fourth Proportional to 311.35, 467.03 and 94.90

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Solution

The fourth proportional to 311.35, 467.03 and 94.90 is: 142.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.35 : 467.03 = 94.90 : x
  2. Step 2: Convert to fraction form
    311.35/467.03 = 94.90/x
  3. Step 3: Cross multiply
    311.35x = 467.03 × 94.90
  4. Step 4: Simplify right side
    311.35x = 44,320.67
  5. Step 5: Solve for x
    x = 44,320.67/311.35
  6. Step 6: Final answer
    x = 142.35

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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.