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Finding the Fourth Proportional to 184.35, 254.45 and 142.79

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Solution

The fourth proportional to 184.35, 254.45 and 142.79 is: 197.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.35 : 254.45 = 142.79 : x
  2. Step 2: Convert to fraction form
    184.35/254.45 = 142.79/x
  3. Step 3: Cross multiply
    184.35x = 254.45 × 142.79
  4. Step 4: Simplify right side
    184.35x = 36,330.93
  5. Step 5: Solve for x
    x = 36,330.93/184.35
  6. Step 6: Final answer
    x = 197.08

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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.