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Finding the Fourth Proportional to 464.95, 640.55 and 324.82

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Solution

The fourth proportional to 464.95, 640.55 and 324.82 is: 447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.95 : 640.55 = 324.82 : x
  2. Step 2: Convert to fraction form
    464.95/640.55 = 324.82/x
  3. Step 3: Cross multiply
    464.95x = 640.55 × 324.82
  4. Step 4: Simplify right side
    464.95x = 208,063.45
  5. Step 5: Solve for x
    x = 208,063.45/464.95
  6. Step 6: Final answer
    x = 447.50

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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.