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Finding the Fourth Proportional to 205.29, 283.50 and 143.03

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Solution

The fourth proportional to 205.29, 283.50 and 143.03 is: 197.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.29 : 283.50 = 143.03 : x
  2. Step 2: Convert to fraction form
    205.29/283.50 = 143.03/x
  3. Step 3: Cross multiply
    205.29x = 283.50 × 143.03
  4. Step 4: Simplify right side
    205.29x = 40,549.71
  5. Step 5: Solve for x
    x = 40,549.71/205.29
  6. Step 6: Final answer
    x = 197.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.