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Finding the Fourth Proportional to 398.98, 600.81 and 348.23

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Solution

The fourth proportional to 398.98, 600.81 and 348.23 is: 524.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.98 : 600.81 = 348.23 : x
  2. Step 2: Convert to fraction form
    398.98/600.81 = 348.23/x
  3. Step 3: Cross multiply
    398.98x = 600.81 × 348.23
  4. Step 4: Simplify right side
    398.98x = 209,217.06
  5. Step 5: Solve for x
    x = 209,217.06/398.98
  6. Step 6: Final answer
    x = 524.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.