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Finding the Fourth Proportional to 397.74, 596.38 and 153.98

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Solution

The fourth proportional to 397.74, 596.38 and 153.98 is: 230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.74 : 596.38 = 153.98 : x
  2. Step 2: Convert to fraction form
    397.74/596.38 = 153.98/x
  3. Step 3: Cross multiply
    397.74x = 596.38 × 153.98
  4. Step 4: Simplify right side
    397.74x = 91,827.42
  5. Step 5: Solve for x
    x = 91,827.42/397.74
  6. Step 6: Final answer
    x = 230.88

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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.