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Finding the Fourth Proportional to 479.03, 718.55 and 170.90

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Solution

The fourth proportional to 479.03, 718.55 and 170.90 is: 256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.03 : 718.55 = 170.90 : x
  2. Step 2: Convert to fraction form
    479.03/718.55 = 170.90/x
  3. Step 3: Cross multiply
    479.03x = 718.55 × 170.90
  4. Step 4: Simplify right side
    479.03x = 122,797.59
  5. Step 5: Solve for x
    x = 122,797.59/479.03
  6. Step 6: Final answer
    x = 256.35

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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.