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Finding the Fourth Proportional to 402.98, 604.41 and 248.83

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Solution

The fourth proportional to 402.98, 604.41 and 248.83 is: 373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.98 : 604.41 = 248.83 : x
  2. Step 2: Convert to fraction form
    402.98/604.41 = 248.83/x
  3. Step 3: Cross multiply
    402.98x = 604.41 × 248.83
  4. Step 4: Simplify right side
    402.98x = 150,395.34
  5. Step 5: Solve for x
    x = 150,395.34/402.98
  6. Step 6: Final answer
    x = 373.21

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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.