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Finding the Fourth Proportional to 464.43, 695.74 and 399.43

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Solution

The fourth proportional to 464.43, 695.74 and 399.43 is: 598.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.43 : 695.74 = 399.43 : x
  2. Step 2: Convert to fraction form
    464.43/695.74 = 399.43/x
  3. Step 3: Cross multiply
    464.43x = 695.74 × 399.43
  4. Step 4: Simplify right side
    464.43x = 277,900.05
  5. Step 5: Solve for x
    x = 277,900.05/464.43
  6. Step 6: Final answer
    x = 598.36

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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.