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Finding the Fourth Proportional to 480.84, 663.66 and 443.76

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Solution

The fourth proportional to 480.84, 663.66 and 443.76 is: 612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.84 : 663.66 = 443.76 : x
  2. Step 2: Convert to fraction form
    480.84/663.66 = 443.76/x
  3. Step 3: Cross multiply
    480.84x = 663.66 × 443.76
  4. Step 4: Simplify right side
    480.84x = 294,505.76
  5. Step 5: Solve for x
    x = 294,505.76/480.84
  6. Step 6: Final answer
    x = 612.48

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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.