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Finding the Fourth Proportional to 600.44, 828.35 and 398.60

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Solution

The fourth proportional to 600.44, 828.35 and 398.60 is: 549.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.44 : 828.35 = 398.60 : x
  2. Step 2: Convert to fraction form
    600.44/828.35 = 398.60/x
  3. Step 3: Cross multiply
    600.44x = 828.35 × 398.60
  4. Step 4: Simplify right side
    600.44x = 330,174.18
  5. Step 5: Solve for x
    x = 330,174.18/600.44
  6. Step 6: Final answer
    x = 549.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.