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Finding the Fourth Proportional to 464.16, 640.49 and 267.64

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Solution

The fourth proportional to 464.16, 640.49 and 267.64 is: 369.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.16 : 640.49 = 267.64 : x
  2. Step 2: Convert to fraction form
    464.16/640.49 = 267.64/x
  3. Step 3: Cross multiply
    464.16x = 640.49 × 267.64
  4. Step 4: Simplify right side
    464.16x = 171,419.81
  5. Step 5: Solve for x
    x = 171,419.81/464.16
  6. Step 6: Final answer
    x = 369.31

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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.