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Finding the Fourth Proportional to 464.12, 696.33 and 220.61

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Solution

The fourth proportional to 464.12, 696.33 and 220.61 is: 330.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.12 : 696.33 = 220.61 : x
  2. Step 2: Convert to fraction form
    464.12/696.33 = 220.61/x
  3. Step 3: Cross multiply
    464.12x = 696.33 × 220.61
  4. Step 4: Simplify right side
    464.12x = 153,617.36
  5. Step 5: Solve for x
    x = 153,617.36/464.12
  6. Step 6: Final answer
    x = 330.99

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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.