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Finding the Fourth Proportional to 464.80, 641.50 and 268.30

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Solution

The fourth proportional to 464.80, 641.50 and 268.30 is: 370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.80 : 641.50 = 268.30 : x
  2. Step 2: Convert to fraction form
    464.80/641.50 = 268.30/x
  3. Step 3: Cross multiply
    464.80x = 641.50 × 268.30
  4. Step 4: Simplify right side
    464.80x = 172,114.45
  5. Step 5: Solve for x
    x = 172,114.45/464.80
  6. Step 6: Final answer
    x = 370.30

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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.