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Finding the Fourth Proportional to 358.77, 495.11 and 211.37

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Solution

The fourth proportional to 358.77, 495.11 and 211.37 is: 291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.77 : 495.11 = 211.37 : x
  2. Step 2: Convert to fraction form
    358.77/495.11 = 211.37/x
  3. Step 3: Cross multiply
    358.77x = 495.11 × 211.37
  4. Step 4: Simplify right side
    358.77x = 104,653.17
  5. Step 5: Solve for x
    x = 104,653.17/358.77
  6. Step 6: Final answer
    x = 291.70

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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.