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Finding the Fourth Proportional to 206.54, 283.10 and 203.72

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Solution

The fourth proportional to 206.54, 283.10 and 203.72 is: 279.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.54 : 283.10 = 203.72 : x
  2. Step 2: Convert to fraction form
    206.54/283.10 = 203.72/x
  3. Step 3: Cross multiply
    206.54x = 283.10 × 203.72
  4. Step 4: Simplify right side
    206.54x = 57,673.13
  5. Step 5: Solve for x
    x = 57,673.13/206.54
  6. Step 6: Final answer
    x = 279.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.