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Finding the Fourth Proportional to 464.68, 696.56 and 172.09

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Solution

The fourth proportional to 464.68, 696.56 and 172.09 is: 257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.68 : 696.56 = 172.09 : x
  2. Step 2: Convert to fraction form
    464.68/696.56 = 172.09/x
  3. Step 3: Cross multiply
    464.68x = 696.56 × 172.09
  4. Step 4: Simplify right side
    464.68x = 119,873.18
  5. Step 5: Solve for x
    x = 119,873.18/464.68
  6. Step 6: Final answer
    x = 257.97

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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.