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Finding the Fourth Proportional to 397.16, 594.97 and 259.79

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Solution

The fourth proportional to 397.16, 594.97 and 259.79 is: 389.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.16 : 594.97 = 259.79 : x
  2. Step 2: Convert to fraction form
    397.16/594.97 = 259.79/x
  3. Step 3: Cross multiply
    397.16x = 594.97 × 259.79
  4. Step 4: Simplify right side
    397.16x = 154,563.63
  5. Step 5: Solve for x
    x = 154,563.63/397.16
  6. Step 6: Final answer
    x = 389.17

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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.