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Finding the Fourth Proportional to 479.05, 718.08 and 170.73

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Solution

The fourth proportional to 479.05, 718.08 and 170.73 is: 255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.05 : 718.08 = 170.73 : x
  2. Step 2: Convert to fraction form
    479.05/718.08 = 170.73/x
  3. Step 3: Cross multiply
    479.05x = 718.08 × 170.73
  4. Step 4: Simplify right side
    479.05x = 122,595.95
  5. Step 5: Solve for x
    x = 122,595.95/479.05
  6. Step 6: Final answer
    x = 255.91

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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.