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Finding the Fourth Proportional to 358.76, 495.07 and 201.39

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Solution

The fourth proportional to 358.76, 495.07 and 201.39 is: 277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.76 : 495.07 = 201.39 : x
  2. Step 2: Convert to fraction form
    358.76/495.07 = 201.39/x
  3. Step 3: Cross multiply
    358.76x = 495.07 × 201.39
  4. Step 4: Simplify right side
    358.76x = 99,699.79
  5. Step 5: Solve for x
    x = 99,699.79/358.76
  6. Step 6: Final answer
    x = 277.90

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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.