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Finding the Fourth Proportional to 494.08, 740.54 and 311.20

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Solution

The fourth proportional to 494.08, 740.54 and 311.20 is: 466.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.08 : 740.54 = 311.20 : x
  2. Step 2: Convert to fraction form
    494.08/740.54 = 311.20/x
  3. Step 3: Cross multiply
    494.08x = 740.54 × 311.20
  4. Step 4: Simplify right side
    494.08x = 230,456.05
  5. Step 5: Solve for x
    x = 230,456.05/494.08
  6. Step 6: Final answer
    x = 466.43

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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.