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Finding the Fourth Proportional to 464.76, 641.43 and 268.38

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Solution

The fourth proportional to 464.76, 641.43 and 268.38 is: 370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.76 : 641.43 = 268.38 : x
  2. Step 2: Convert to fraction form
    464.76/641.43 = 268.38/x
  3. Step 3: Cross multiply
    464.76x = 641.43 × 268.38
  4. Step 4: Simplify right side
    464.76x = 172,146.98
  5. Step 5: Solve for x
    x = 172,146.98/464.76
  6. Step 6: Final answer
    x = 370.40

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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.