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Finding the Fourth Proportional to 182.42, 251.54 and 143

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Solution

The fourth proportional to 182.42, 251.54 and 143 is: 197.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.42 : 251.54 = 143 : x
  2. Step 2: Convert to fraction form
    182.42/251.54 = 143/x
  3. Step 3: Cross multiply
    182.42x = 251.54 × 143
  4. Step 4: Simplify right side
    182.42x = 35,970.22
  5. Step 5: Solve for x
    x = 35,970.22/182.42
  6. Step 6: Final answer
    x = 197.19

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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.