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Finding the Fourth Proportional to 200.99, 301.20 and 98.19

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Solution

The fourth proportional to 200.99, 301.20 and 98.19 is: 147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.99 : 301.20 = 98.19 : x
  2. Step 2: Convert to fraction form
    200.99/301.20 = 98.19/x
  3. Step 3: Cross multiply
    200.99x = 301.20 × 98.19
  4. Step 4: Simplify right side
    200.99x = 29,574.83
  5. Step 5: Solve for x
    x = 29,574.83/200.99
  6. Step 6: Final answer
    x = 147.15

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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.