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Finding the Fourth Proportional to 662.08, 993.66 and 479.56

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Solution

The fourth proportional to 662.08, 993.66 and 479.56 is: 719.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.08 : 993.66 = 479.56 : x
  2. Step 2: Convert to fraction form
    662.08/993.66 = 479.56/x
  3. Step 3: Cross multiply
    662.08x = 993.66 × 479.56
  4. Step 4: Simplify right side
    662.08x = 476,519.59
  5. Step 5: Solve for x
    x = 476,519.59/662.08
  6. Step 6: Final answer
    x = 719.73

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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.