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Finding the Fourth Proportional to 694.18, 958.21 and 446.18

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Solution

The fourth proportional to 694.18, 958.21 and 446.18 is: 615.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.18 : 958.21 = 446.18 : x
  2. Step 2: Convert to fraction form
    694.18/958.21 = 446.18/x
  3. Step 3: Cross multiply
    694.18x = 958.21 × 446.18
  4. Step 4: Simplify right side
    694.18x = 427,534.14
  5. Step 5: Solve for x
    x = 427,534.14/694.18
  6. Step 6: Final answer
    x = 615.88

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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.