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Finding the Fourth Proportional to 706.73, 1,059.99 and 445.94

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Solution

The fourth proportional to 706.73, 1,059.99 and 445.94 is: 668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.73 : 1,059.99 = 445.94 : x
  2. Step 2: Convert to fraction form
    706.73/1,059.99 = 445.94/x
  3. Step 3: Cross multiply
    706.73x = 1,059.99 × 445.94
  4. Step 4: Simplify right side
    706.73x = 472,688.94
  5. Step 5: Solve for x
    x = 472,688.94/706.73
  6. Step 6: Final answer
    x = 668.84

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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.