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Finding the Fourth Proportional to 358.27, 494.43 and 210.90

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Solution

The fourth proportional to 358.27, 494.43 and 210.90 is: 291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.27 : 494.43 = 210.90 : x
  2. Step 2: Convert to fraction form
    358.27/494.43 = 210.90/x
  3. Step 3: Cross multiply
    358.27x = 494.43 × 210.90
  4. Step 4: Simplify right side
    358.27x = 104,276.94
  5. Step 5: Solve for x
    x = 104,276.94/358.27
  6. Step 6: Final answer
    x = 291.05

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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.