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Finding the Fourth Proportional to 169.99, 255.03 and 155.15

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Solution

The fourth proportional to 169.99, 255.03 and 155.15 is: 232.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.99 : 255.03 = 155.15 : x
  2. Step 2: Convert to fraction form
    169.99/255.03 = 155.15/x
  3. Step 3: Cross multiply
    169.99x = 255.03 × 155.15
  4. Step 4: Simplify right side
    169.99x = 39,567.90
  5. Step 5: Solve for x
    x = 39,567.90/169.99
  6. Step 6: Final answer
    x = 232.77

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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.