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Finding the Fourth Proportional to 464.28, 694.81 and 288.51

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Solution

The fourth proportional to 464.28, 694.81 and 288.51 is: 431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.28 : 694.81 = 288.51 : x
  2. Step 2: Convert to fraction form
    464.28/694.81 = 288.51/x
  3. Step 3: Cross multiply
    464.28x = 694.81 × 288.51
  4. Step 4: Simplify right side
    464.28x = 200,458.19
  5. Step 5: Solve for x
    x = 200,458.19/464.28
  6. Step 6: Final answer
    x = 431.76

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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.