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Finding the Fourth Proportional to 200.91, 301.37 and 98.18

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Solution

The fourth proportional to 200.91, 301.37 and 98.18 is: 147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.91 : 301.37 = 98.18 : x
  2. Step 2: Convert to fraction form
    200.91/301.37 = 98.18/x
  3. Step 3: Cross multiply
    200.91x = 301.37 × 98.18
  4. Step 4: Simplify right side
    200.91x = 29,588.51
  5. Step 5: Solve for x
    x = 29,588.51/200.91
  6. Step 6: Final answer
    x = 147.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.