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Finding the Fourth Proportional to 464.29, 696.48 and 220.75

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Solution

The fourth proportional to 464.29, 696.48 and 220.75 is: 331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.29 : 696.48 = 220.75 : x
  2. Step 2: Convert to fraction form
    464.29/696.48 = 220.75/x
  3. Step 3: Cross multiply
    464.29x = 696.48 × 220.75
  4. Step 4: Simplify right side
    464.29x = 153,747.96
  5. Step 5: Solve for x
    x = 153,747.96/464.29
  6. Step 6: Final answer
    x = 331.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.