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Finding the Fourth Proportional to 480.25, 662.76 and 283.93

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Solution

The fourth proportional to 480.25, 662.76 and 283.93 is: 391.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.25 : 662.76 = 283.93 : x
  2. Step 2: Convert to fraction form
    480.25/662.76 = 283.93/x
  3. Step 3: Cross multiply
    480.25x = 662.76 × 283.93
  4. Step 4: Simplify right side
    480.25x = 188,177.45
  5. Step 5: Solve for x
    x = 188,177.45/480.25
  6. Step 6: Final answer
    x = 391.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.