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Finding the Fourth Proportional to 694.90, 958.57 and 445.94

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Solution

The fourth proportional to 694.90, 958.57 and 445.94 is: 615.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.90 : 958.57 = 445.94 : x
  2. Step 2: Convert to fraction form
    694.90/958.57 = 445.94/x
  3. Step 3: Cross multiply
    694.90x = 958.57 × 445.94
  4. Step 4: Simplify right side
    694.90x = 427,459.91
  5. Step 5: Solve for x
    x = 427,459.91/694.90
  6. Step 6: Final answer
    x = 615.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.