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Finding the Fourth Proportional to 464.96, 698.30 and 439.49

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Solution

The fourth proportional to 464.96, 698.30 and 439.49 is: 660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.96 : 698.30 = 439.49 : x
  2. Step 2: Convert to fraction form
    464.96/698.30 = 439.49/x
  3. Step 3: Cross multiply
    464.96x = 698.30 × 439.49
  4. Step 4: Simplify right side
    464.96x = 306,895.87
  5. Step 5: Solve for x
    x = 306,895.87/464.96
  6. Step 6: Final answer
    x = 660.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.