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Finding the Fourth Proportional to 204.81, 282.73 and 134.90

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Solution

The fourth proportional to 204.81, 282.73 and 134.90 is: 186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.81 : 282.73 = 134.90 : x
  2. Step 2: Convert to fraction form
    204.81/282.73 = 134.90/x
  3. Step 3: Cross multiply
    204.81x = 282.73 × 134.90
  4. Step 4: Simplify right side
    204.81x = 38,140.31
  5. Step 5: Solve for x
    x = 38,140.31/204.81
  6. Step 6: Final answer
    x = 186.23

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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.