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Finding the Fourth Proportional to 182.85, 252.48 and 155.31

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Solution

The fourth proportional to 182.85, 252.48 and 155.31 is: 214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.85 : 252.48 = 155.31 : x
  2. Step 2: Convert to fraction form
    182.85/252.48 = 155.31/x
  3. Step 3: Cross multiply
    182.85x = 252.48 × 155.31
  4. Step 4: Simplify right side
    182.85x = 39,212.67
  5. Step 5: Solve for x
    x = 39,212.67/182.85
  6. Step 6: Final answer
    x = 214.45

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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.