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Finding the Fourth Proportional to 204.46, 281.89 and 130.65

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Solution

The fourth proportional to 204.46, 281.89 and 130.65 is: 180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.46 : 281.89 = 130.65 : x
  2. Step 2: Convert to fraction form
    204.46/281.89 = 130.65/x
  3. Step 3: Cross multiply
    204.46x = 281.89 × 130.65
  4. Step 4: Simplify right side
    204.46x = 36,828.93
  5. Step 5: Solve for x
    x = 36,828.93/204.46
  6. Step 6: Final answer
    x = 180.13

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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.