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Finding the Fourth Proportional to 481.57, 663.56 and 376.49

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Solution

The fourth proportional to 481.57, 663.56 and 376.49 is: 518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.57 : 663.56 = 376.49 : x
  2. Step 2: Convert to fraction form
    481.57/663.56 = 376.49/x
  3. Step 3: Cross multiply
    481.57x = 663.56 × 376.49
  4. Step 4: Simplify right side
    481.57x = 249,823.70
  5. Step 5: Solve for x
    x = 249,823.70/481.57
  6. Step 6: Final answer
    x = 518.77

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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.