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Finding the Fourth Proportional to 479.10, 718.60 and 170.92

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Solution

The fourth proportional to 479.10, 718.60 and 170.92 is: 256.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.10 : 718.60 = 170.92 : x
  2. Step 2: Convert to fraction form
    479.10/718.60 = 170.92/x
  3. Step 3: Cross multiply
    479.10x = 718.60 × 170.92
  4. Step 4: Simplify right side
    479.10x = 122,823.58
  5. Step 5: Solve for x
    x = 122,823.58/479.10
  6. Step 6: Final answer
    x = 256.37

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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.