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Finding the Fourth Proportional to 464.28, 640.65 and 277.83

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Solution

The fourth proportional to 464.28, 640.65 and 277.83 is: 383.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.28 : 640.65 = 277.83 : x
  2. Step 2: Convert to fraction form
    464.28/640.65 = 277.83/x
  3. Step 3: Cross multiply
    464.28x = 640.65 × 277.83
  4. Step 4: Simplify right side
    464.28x = 177,991.79
  5. Step 5: Solve for x
    x = 177,991.79/464.28
  6. Step 6: Final answer
    x = 383.37

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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.