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Finding the Fourth Proportional to 494.42, 740.41 and 398.03

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Solution

The fourth proportional to 494.42, 740.41 and 398.03 is: 596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.42 : 740.41 = 398.03 : x
  2. Step 2: Convert to fraction form
    494.42/740.41 = 398.03/x
  3. Step 3: Cross multiply
    494.42x = 740.41 × 398.03
  4. Step 4: Simplify right side
    494.42x = 294,705.39
  5. Step 5: Solve for x
    x = 294,705.39/494.42
  6. Step 6: Final answer
    x = 596.06

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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.