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Finding the Fourth Proportional to 201.03, 277.67 and 145.68

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Solution

The fourth proportional to 201.03, 277.67 and 145.68 is: 201.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.03 : 277.67 = 145.68 : x
  2. Step 2: Convert to fraction form
    201.03/277.67 = 145.68/x
  3. Step 3: Cross multiply
    201.03x = 277.67 × 145.68
  4. Step 4: Simplify right side
    201.03x = 40,450.97
  5. Step 5: Solve for x
    x = 40,450.97/201.03
  6. Step 6: Final answer
    x = 201.22

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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.