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Finding the Fourth Proportional to 464.55, 641.22 and 268.20

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Solution

The fourth proportional to 464.55, 641.22 and 268.20 is: 370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.55 : 641.22 = 268.20 : x
  2. Step 2: Convert to fraction form
    464.55/641.22 = 268.20/x
  3. Step 3: Cross multiply
    464.55x = 641.22 × 268.20
  4. Step 4: Simplify right side
    464.55x = 171,975.20
  5. Step 5: Solve for x
    x = 171,975.20/464.55
  6. Step 6: Final answer
    x = 370.20

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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.