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Finding the Fourth Proportional to 397.79, 596.54 and 154.29

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Solution

The fourth proportional to 397.79, 596.54 and 154.29 is: 231.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.79 : 596.54 = 154.29 : x
  2. Step 2: Convert to fraction form
    397.79/596.54 = 154.29/x
  3. Step 3: Cross multiply
    397.79x = 596.54 × 154.29
  4. Step 4: Simplify right side
    397.79x = 92,036.40
  5. Step 5: Solve for x
    x = 92,036.40/397.79
  6. Step 6: Final answer
    x = 231.37

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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.