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Finding the Fourth Proportional to 203.20, 303.28 and 191.04

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Solution

The fourth proportional to 203.20, 303.28 and 191.04 is: 285.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.20 : 303.28 = 191.04 : x
  2. Step 2: Convert to fraction form
    203.20/303.28 = 191.04/x
  3. Step 3: Cross multiply
    203.20x = 303.28 × 191.04
  4. Step 4: Simplify right side
    203.20x = 57,938.61
  5. Step 5: Solve for x
    x = 57,938.61/203.20
  6. Step 6: Final answer
    x = 285.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.