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Finding the Fourth Proportional to 200.99, 300.09 and 170.57

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Solution

The fourth proportional to 200.99, 300.09 and 170.57 is: 254.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.99 : 300.09 = 170.57 : x
  2. Step 2: Convert to fraction form
    200.99/300.09 = 170.57/x
  3. Step 3: Cross multiply
    200.99x = 300.09 × 170.57
  4. Step 4: Simplify right side
    200.99x = 51,186.35
  5. Step 5: Solve for x
    x = 51,186.35/200.99
  6. Step 6: Final answer
    x = 254.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.