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Finding the Fourth Proportional to 480.75, 663.30 and 270.92

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Solution

The fourth proportional to 480.75, 663.30 and 270.92 is: 373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.75 : 663.30 = 270.92 : x
  2. Step 2: Convert to fraction form
    480.75/663.30 = 270.92/x
  3. Step 3: Cross multiply
    480.75x = 663.30 × 270.92
  4. Step 4: Simplify right side
    480.75x = 179,697.92
  5. Step 5: Solve for x
    x = 179,697.92/480.75
  6. Step 6: Final answer
    x = 373.79

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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.