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Finding the Fourth Proportional to 204.21, 306.32 and 101.47

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Solution

The fourth proportional to 204.21, 306.32 and 101.47 is: 152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.21 : 306.32 = 101.47 : x
  2. Step 2: Convert to fraction form
    204.21/306.32 = 101.47/x
  3. Step 3: Cross multiply
    204.21x = 306.32 × 101.47
  4. Step 4: Simplify right side
    204.21x = 31,081.59
  5. Step 5: Solve for x
    x = 31,081.59/204.21
  6. Step 6: Final answer
    x = 152.20

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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.