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Finding the Fourth Proportional to 358.96, 495.30 and 219.10

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Solution

The fourth proportional to 358.96, 495.30 and 219.10 is: 302.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.96 : 495.30 = 219.10 : x
  2. Step 2: Convert to fraction form
    358.96/495.30 = 219.10/x
  3. Step 3: Cross multiply
    358.96x = 495.30 × 219.10
  4. Step 4: Simplify right side
    358.96x = 108,520.23
  5. Step 5: Solve for x
    x = 108,520.23/358.96
  6. Step 6: Final answer
    x = 302.32

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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.