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Finding the Fourth Proportional to 183.31, 253.26 and 155.97

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Solution

The fourth proportional to 183.31, 253.26 and 155.97 is: 215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.31 : 253.26 = 155.97 : x
  2. Step 2: Convert to fraction form
    183.31/253.26 = 155.97/x
  3. Step 3: Cross multiply
    183.31x = 253.26 × 155.97
  4. Step 4: Simplify right side
    183.31x = 39,500.96
  5. Step 5: Solve for x
    x = 39,500.96/183.31
  6. Step 6: Final answer
    x = 215.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.