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Finding the Fourth Proportional to 170.69, 255.64 and 104.63

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Solution

The fourth proportional to 170.69, 255.64 and 104.63 is: 156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.69 : 255.64 = 104.63 : x
  2. Step 2: Convert to fraction form
    170.69/255.64 = 104.63/x
  3. Step 3: Cross multiply
    170.69x = 255.64 × 104.63
  4. Step 4: Simplify right side
    170.69x = 26,745.81
  5. Step 5: Solve for x
    x = 26,745.81/170.69
  6. Step 6: Final answer
    x = 156.70

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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.