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Finding the Fourth Proportional to 481.65, 663.84 and 415.10

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Solution

The fourth proportional to 481.65, 663.84 and 415.10 is: 572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.65 : 663.84 = 415.10 : x
  2. Step 2: Convert to fraction form
    481.65/663.84 = 415.10/x
  3. Step 3: Cross multiply
    481.65x = 663.84 × 415.10
  4. Step 4: Simplify right side
    481.65x = 275,559.98
  5. Step 5: Solve for x
    x = 275,559.98/481.65
  6. Step 6: Final answer
    x = 572.12

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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.