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Finding the Fourth Proportional to 203.95, 281.45 and 110.69

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Solution

The fourth proportional to 203.95, 281.45 and 110.69 is: 152.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.95 : 281.45 = 110.69 : x
  2. Step 2: Convert to fraction form
    203.95/281.45 = 110.69/x
  3. Step 3: Cross multiply
    203.95x = 281.45 × 110.69
  4. Step 4: Simplify right side
    203.95x = 31,155.21
  5. Step 5: Solve for x
    x = 31,155.21/203.95
  6. Step 6: Final answer
    x = 152.76

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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.