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Finding the Fourth Proportional to 204.48, 306.45 and 101.79

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Solution

The fourth proportional to 204.48, 306.45 and 101.79 is: 152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.48 : 306.45 = 101.79 : x
  2. Step 2: Convert to fraction form
    204.48/306.45 = 101.79/x
  3. Step 3: Cross multiply
    204.48x = 306.45 × 101.79
  4. Step 4: Simplify right side
    204.48x = 31,193.55
  5. Step 5: Solve for x
    x = 31,193.55/204.48
  6. Step 6: Final answer
    x = 152.55

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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.