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Finding the Fourth Proportional to 204.59, 305.51 and 162.88

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Solution

The fourth proportional to 204.59, 305.51 and 162.88 is: 243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.59 : 305.51 = 162.88 : x
  2. Step 2: Convert to fraction form
    204.59/305.51 = 162.88/x
  3. Step 3: Cross multiply
    204.59x = 305.51 × 162.88
  4. Step 4: Simplify right side
    204.59x = 49,759.89
  5. Step 5: Solve for x
    x = 49,759.89/204.59
  6. Step 6: Final answer
    x = 243.21

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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.