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Finding the Fourth Proportional to 464.64, 641.20 and 268.08

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Solution

The fourth proportional to 464.64, 641.20 and 268.08 is: 369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.64 : 641.20 = 268.08 : x
  2. Step 2: Convert to fraction form
    464.64/641.20 = 268.08/x
  3. Step 3: Cross multiply
    464.64x = 641.20 × 268.08
  4. Step 4: Simplify right side
    464.64x = 171,892.90
  5. Step 5: Solve for x
    x = 171,892.90/464.64
  6. Step 6: Final answer
    x = 369.95

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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.