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Finding the Fourth Proportional to 203.30, 303.27 and 188

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Solution

The fourth proportional to 203.30, 303.27 and 188 is: 280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.30 : 303.27 = 188 : x
  2. Step 2: Convert to fraction form
    203.30/303.27 = 188/x
  3. Step 3: Cross multiply
    203.30x = 303.27 × 188
  4. Step 4: Simplify right side
    203.30x = 57,014.76
  5. Step 5: Solve for x
    x = 57,014.76/203.30
  6. Step 6: Final answer
    x = 280.45

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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.