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Finding the Fourth Proportional to 358.19, 494.19 and 200.81

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Solution

The fourth proportional to 358.19, 494.19 and 200.81 is: 277.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.19 : 494.19 = 200.81 : x
  2. Step 2: Convert to fraction form
    358.19/494.19 = 200.81/x
  3. Step 3: Cross multiply
    358.19x = 494.19 × 200.81
  4. Step 4: Simplify right side
    358.19x = 99,235.82
  5. Step 5: Solve for x
    x = 99,235.82/358.19
  6. Step 6: Final answer
    x = 277.05

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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.