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Finding the Fourth Proportional to 203.74, 281.01 and 137.32

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Solution

The fourth proportional to 203.74, 281.01 and 137.32 is: 189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.74 : 281.01 = 137.32 : x
  2. Step 2: Convert to fraction form
    203.74/281.01 = 137.32/x
  3. Step 3: Cross multiply
    203.74x = 281.01 × 137.32
  4. Step 4: Simplify right side
    203.74x = 38,588.29
  5. Step 5: Solve for x
    x = 38,588.29/203.74
  6. Step 6: Final answer
    x = 189.40

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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.