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Finding the Fourth Proportional to 358.86, 495.24 and 199.34

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Solution

The fourth proportional to 358.86, 495.24 and 199.34 is: 275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.86 : 495.24 = 199.34 : x
  2. Step 2: Convert to fraction form
    358.86/495.24 = 199.34/x
  3. Step 3: Cross multiply
    358.86x = 495.24 × 199.34
  4. Step 4: Simplify right side
    358.86x = 98,722.44
  5. Step 5: Solve for x
    x = 98,722.44/358.86
  6. Step 6: Final answer
    x = 275.10

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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.