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Finding the Fourth Proportional to 204.10, 307.70 and 193.30

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Solution

The fourth proportional to 204.10, 307.70 and 193.30 is: 291.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.10 : 307.70 = 193.30 : x
  2. Step 2: Convert to fraction form
    204.10/307.70 = 193.30/x
  3. Step 3: Cross multiply
    204.10x = 307.70 × 193.30
  4. Step 4: Simplify right side
    204.10x = 59,478.41
  5. Step 5: Solve for x
    x = 59,478.41/204.10
  6. Step 6: Final answer
    x = 291.42

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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.