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Finding the Fourth Proportional to 694.89, 958.98 and 380.18

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Solution

The fourth proportional to 694.89, 958.98 and 380.18 is: 524.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.89 : 958.98 = 380.18 : x
  2. Step 2: Convert to fraction form
    694.89/958.98 = 380.18/x
  3. Step 3: Cross multiply
    694.89x = 958.98 × 380.18
  4. Step 4: Simplify right side
    694.89x = 364,580.22
  5. Step 5: Solve for x
    x = 364,580.22/694.89
  6. Step 6: Final answer
    x = 524.66

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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.