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Finding the Fourth Proportional to 353.98, 488.48 and 204.50

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Solution

The fourth proportional to 353.98, 488.48 and 204.50 is: 282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.98 : 488.48 = 204.50 : x
  2. Step 2: Convert to fraction form
    353.98/488.48 = 204.50/x
  3. Step 3: Cross multiply
    353.98x = 488.48 × 204.50
  4. Step 4: Simplify right side
    353.98x = 99,894.36
  5. Step 5: Solve for x
    x = 99,894.36/353.98
  6. Step 6: Final answer
    x = 282.20

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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.