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Finding the Fourth Proportional to 170.87, 256.10 and 73.29

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Solution

The fourth proportional to 170.87, 256.10 and 73.29 is: 109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.87 : 256.10 = 73.29 : x
  2. Step 2: Convert to fraction form
    170.87/256.10 = 73.29/x
  3. Step 3: Cross multiply
    170.87x = 256.10 × 73.29
  4. Step 4: Simplify right side
    170.87x = 18,769.20
  5. Step 5: Solve for x
    x = 18,769.20/170.87
  6. Step 6: Final answer
    x = 109.85

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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.