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Finding the Fourth Proportional to 662.74, 993.38 and 480.93

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Solution

The fourth proportional to 662.74, 993.38 and 480.93 is: 720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.74 : 993.38 = 480.93 : x
  2. Step 2: Convert to fraction form
    662.74/993.38 = 480.93/x
  3. Step 3: Cross multiply
    662.74x = 993.38 × 480.93
  4. Step 4: Simplify right side
    662.74x = 477,746.24
  5. Step 5: Solve for x
    x = 477,746.24/662.74
  6. Step 6: Final answer
    x = 720.87

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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.