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Finding the Fourth Proportional to 203.08, 302.15 and 191.56

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Solution

The fourth proportional to 203.08, 302.15 and 191.56 is: 285.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.08 : 302.15 = 191.56 : x
  2. Step 2: Convert to fraction form
    203.08/302.15 = 191.56/x
  3. Step 3: Cross multiply
    203.08x = 302.15 × 191.56
  4. Step 4: Simplify right side
    203.08x = 57,879.85
  5. Step 5: Solve for x
    x = 57,879.85/203.08
  6. Step 6: Final answer
    x = 285.01

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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.