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Finding the Fourth Proportional to 201.07, 277.61 and 154.36

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Solution

The fourth proportional to 201.07, 277.61 and 154.36 is: 213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.07 : 277.61 = 154.36 : x
  2. Step 2: Convert to fraction form
    201.07/277.61 = 154.36/x
  3. Step 3: Cross multiply
    201.07x = 277.61 × 154.36
  4. Step 4: Simplify right side
    201.07x = 42,851.93
  5. Step 5: Solve for x
    x = 42,851.93/201.07
  6. Step 6: Final answer
    x = 213.12

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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.