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Finding the Fourth Proportional to 204.42, 307.85 and 180.28

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Solution

The fourth proportional to 204.42, 307.85 and 180.28 is: 271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.42 : 307.85 = 180.28 : x
  2. Step 2: Convert to fraction form
    204.42/307.85 = 180.28/x
  3. Step 3: Cross multiply
    204.42x = 307.85 × 180.28
  4. Step 4: Simplify right side
    204.42x = 55,497.96
  5. Step 5: Solve for x
    x = 55,497.96/204.42
  6. Step 6: Final answer
    x = 271.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.