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Finding the Fourth Proportional to 401.46, 602.48 and 398.44

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Solution

The fourth proportional to 401.46, 602.48 and 398.44 is: 597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.46 : 602.48 = 398.44 : x
  2. Step 2: Convert to fraction form
    401.46/602.48 = 398.44/x
  3. Step 3: Cross multiply
    401.46x = 602.48 × 398.44
  4. Step 4: Simplify right side
    401.46x = 240,052.13
  5. Step 5: Solve for x
    x = 240,052.13/401.46
  6. Step 6: Final answer
    x = 597.95

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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.