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Finding the Fourth Proportional to 694.85, 958.17 and 561.94

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Solution

The fourth proportional to 694.85, 958.17 and 561.94 is: 774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.85 : 958.17 = 561.94 : x
  2. Step 2: Convert to fraction form
    694.85/958.17 = 561.94/x
  3. Step 3: Cross multiply
    694.85x = 958.17 × 561.94
  4. Step 4: Simplify right side
    694.85x = 538,434.05
  5. Step 5: Solve for x
    x = 538,434.05/694.85
  6. Step 6: Final answer
    x = 774.89

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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.