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Finding the Fourth Proportional to 204.70, 306.89 and 101.87

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Solution

The fourth proportional to 204.70, 306.89 and 101.87 is: 152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.70 : 306.89 = 101.87 : x
  2. Step 2: Convert to fraction form
    204.70/306.89 = 101.87/x
  3. Step 3: Cross multiply
    204.70x = 306.89 × 101.87
  4. Step 4: Simplify right side
    204.70x = 31,262.37
  5. Step 5: Solve for x
    x = 31,262.37/204.70
  6. Step 6: Final answer
    x = 152.73

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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.