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Finding the Fourth Proportional to 957.75, 1,436.49 and 437.73

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Solution

The fourth proportional to 957.75, 1,436.49 and 437.73 is: 656.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.75 : 1,436.49 = 437.73 : x
  2. Step 2: Convert to fraction form
    957.75/1,436.49 = 437.73/x
  3. Step 3: Cross multiply
    957.75x = 1,436.49 × 437.73
  4. Step 4: Simplify right side
    957.75x = 628,794.77
  5. Step 5: Solve for x
    x = 628,794.77/957.75
  6. Step 6: Final answer
    x = 656.53

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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.