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Finding the Fourth Proportional to 398.93, 597.96 and 155.25

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Solution

The fourth proportional to 398.93, 597.96 and 155.25 is: 232.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.93 : 597.96 = 155.25 : x
  2. Step 2: Convert to fraction form
    398.93/597.96 = 155.25/x
  3. Step 3: Cross multiply
    398.93x = 597.96 × 155.25
  4. Step 4: Simplify right side
    398.93x = 92,833.29
  5. Step 5: Solve for x
    x = 92,833.29/398.93
  6. Step 6: Final answer
    x = 232.71

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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.