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Finding the Fourth Proportional to 464.02, 640.38 and 267.56

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Solution

The fourth proportional to 464.02, 640.38 and 267.56 is: 369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.02 : 640.38 = 267.56 : x
  2. Step 2: Convert to fraction form
    464.02/640.38 = 267.56/x
  3. Step 3: Cross multiply
    464.02x = 640.38 × 267.56
  4. Step 4: Simplify right side
    464.02x = 171,340.07
  5. Step 5: Solve for x
    x = 171,340.07/464.02
  6. Step 6: Final answer
    x = 369.25

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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.