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Finding the Fourth Proportional to 401.37, 601.92 and 141.30

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Solution

The fourth proportional to 401.37, 601.92 and 141.30 is: 211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.37 : 601.92 = 141.30 : x
  2. Step 2: Convert to fraction form
    401.37/601.92 = 141.30/x
  3. Step 3: Cross multiply
    401.37x = 601.92 × 141.30
  4. Step 4: Simplify right side
    401.37x = 85,051.30
  5. Step 5: Solve for x
    x = 85,051.30/401.37
  6. Step 6: Final answer
    x = 211.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.