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Finding the Fourth Proportional to 437.21, 656.36 and 193.85

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Solution

The fourth proportional to 437.21, 656.36 and 193.85 is: 291.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.21 : 656.36 = 193.85 : x
  2. Step 2: Convert to fraction form
    437.21/656.36 = 193.85/x
  3. Step 3: Cross multiply
    437.21x = 656.36 × 193.85
  4. Step 4: Simplify right side
    437.21x = 127,234.42
  5. Step 5: Solve for x
    x = 127,234.42/437.21
  6. Step 6: Final answer
    x = 291.01

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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.