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Finding the Fourth Proportional to 170.33, 254.33 and 139.95

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Solution

The fourth proportional to 170.33, 254.33 and 139.95 is: 208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.33 : 254.33 = 139.95 : x
  2. Step 2: Convert to fraction form
    170.33/254.33 = 139.95/x
  3. Step 3: Cross multiply
    170.33x = 254.33 × 139.95
  4. Step 4: Simplify right side
    170.33x = 35,592.78
  5. Step 5: Solve for x
    x = 35,592.78/170.33
  6. Step 6: Final answer
    x = 208.97

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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.