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Finding the Fourth Proportional to 204.88, 305.40 and 202.46

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Solution

The fourth proportional to 204.88, 305.40 and 202.46 is: 301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.88 : 305.40 = 202.46 : x
  2. Step 2: Convert to fraction form
    204.88/305.40 = 202.46/x
  3. Step 3: Cross multiply
    204.88x = 305.40 × 202.46
  4. Step 4: Simplify right side
    204.88x = 61,831.28
  5. Step 5: Solve for x
    x = 61,831.28/204.88
  6. Step 6: Final answer
    x = 301.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.