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Finding the Fourth Proportional to 437.87, 656.53 and 206.62

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Solution

The fourth proportional to 437.87, 656.53 and 206.62 is: 309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.87 : 656.53 = 206.62 : x
  2. Step 2: Convert to fraction form
    437.87/656.53 = 206.62/x
  3. Step 3: Cross multiply
    437.87x = 656.53 × 206.62
  4. Step 4: Simplify right side
    437.87x = 135,652.23
  5. Step 5: Solve for x
    x = 135,652.23/437.87
  6. Step 6: Final answer
    x = 309.80

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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.