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Finding the Fourth Proportional to 136.18, 204.28 and 44.90

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Solution

The fourth proportional to 136.18, 204.28 and 44.90 is: 67.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.18 : 204.28 = 44.90 : x
  2. Step 2: Convert to fraction form
    136.18/204.28 = 44.90/x
  3. Step 3: Cross multiply
    136.18x = 204.28 × 44.90
  4. Step 4: Simplify right side
    136.18x = 9,171.04
  5. Step 5: Solve for x
    x = 9,171.04/136.18
  6. Step 6: Final answer
    x = 67.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.