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Finding the Fourth Proportional to 220.52, 304.08 and 145.85

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Solution

The fourth proportional to 220.52, 304.08 and 145.85 is: 201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.52 : 304.08 = 145.85 : x
  2. Step 2: Convert to fraction form
    220.52/304.08 = 145.85/x
  3. Step 3: Cross multiply
    220.52x = 304.08 × 145.85
  4. Step 4: Simplify right side
    220.52x = 44,348.55
  5. Step 5: Solve for x
    x = 44,348.55/220.52
  6. Step 6: Final answer
    x = 201.11

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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.